Department profile · Middlesex County

Middlesex County Sheriff's Department

Reported as: Middlesex Co Sheriffs DeptCounty sheriff

Jurisdiction context

Civil service jurisdiction

Discipline at this department is governed by the Title 4A civil service framework, matched to Middlesex County on the New Jersey Civil Service Commission roster.

Read how the process works or the Title 4A glossary. Browse NJCSNavigator’s civil service jurisdiction directory for the full local-jurisdiction roster.

Reflects the NJCSC Appendix A roster as of 2026-07-04. Context only, not legal advice.

In brief

Middlesex County Sheriff's Department logged 44 internal affairs investigations in 2025 and 29 officers named in those cases. Its rate of 151.7 per 100 officers matched the Middlesex County median of 151.7 and ran well above the 115.2 median for sheriff agencies. A rate that far above the type median can mean more misconduct or a department that opens a file on more of what it hears. Sustained complaints were reported in 19 of the 44 investigations detailed for 2025. Other Departmental Rule Violation was the leading allegation category, ahead of Demeanor and Conduct Unbecoming/Discredit To The Agency.

The 2020-2025 releases carry 18 major discipline records for the department, from 2020, 2022, 2024 and 2025, including five terminations. Middlesex County Sheriff's Department received an F on the report card, at the 88th percentile among 21 peers in the group of all sheriff agencies, a high-confidence grade.

Written by this site strictly from the figures on this page; every number is cited below.

Officers named in IA cases, 2025

29^{^[1]}

Distinct officers in that year's IA investigations, not total staffing

IA investigations, 2025

44^{^[1]}

Incidents, 2025

44^{^[1]}

Major discipline records

All years, 2020-2025

Staffing

Staffing data not available. The FBI's national staffing census (LEE) does not separately track county corrections facilities, sheriff's offices, or other county agencies in New Jersey -- only a single statewide Department of Corrections figure exists in that data. See the methodology for what FBI staffing data does and does not cover.

Military surplus equipment (1033 program)

No 1033 transfers recorded. No surplus-equipment transfers appear for this agency under a high-confidence name match in the Defense Logistics Agency's file as of 2026-06-30. That can mean the agency received nothing through the program, or that a recipient name in the federal file did not confidently match this department. See the methodology for how the match is made, or the statewide 1033 overview for how the program spreads across New Jersey.

Internal affairs investigations by year

counts

Internal affairs investigations reported by Middlesex County Sheriff's Department, by year
Category	counts
2021	29
2022	45
2023	44
2024	47
2025	44

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Incidents

44 in 2025

Internal affairs incidents reported by Middlesex County Sheriff's Department, by year
Year	counts
2021	29
2022	45
2023	44
2024	47
2025	44

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Officers on IA rows

44 in 2025

Officers listed on the officer-level internal affairs rows for Middlesex County Sheriff's Department, by year
Year	counts
2021	not reported
2022	not reported
2023	not reported
2024	47
2025	44

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Analysis

Computed by this site from the two figures the agency reports each year. Not a misconduct rate: it describes how an agency resolved what it investigated.

share of total · 5 reported years

Share of internal affairs investigations sustained by Middlesex County Sheriff's Department, by year
Year	share of total
2021	0
2022	33.333
2023	54.545
2024	31.915
2025	43.182

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Statewide, 19.5 percent of investigations reported a sustained complaint in 2025. How dispositions break down statewide.

Complaint mix, 2025

Most serious allegation per investigation, as categorized by the reporting agency. Officer-level rows list 44 officers involved.

Most serious allegation

Most serious allegations reported by Middlesex County Sheriff's Department, 2025
Other Departmental Rule Violation	19
Demeanor	8
Conduct Unbecoming/Discredit To The Agency	6
BWC/MVR Violation	5
not provided	3
Neglect of Duty	2
Loss Of Or Failure To Safeguard Agency Propert	1

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AdministrativeConduct / dutyRights / integrityViolence / criminal

Statewide category pages: Other Departmental Rule Violation · Demeanor · Conduct Unbecoming/Discredit To The Agency · BWC/MVR Violation · Neglect of Duty · Loss Of Or Failure To Safeguard Agency Propert

Internal disposition

Internal dispositions reported by Middlesex County Sheriff's Department, 2025
Sustained	21
Not Sustained	12
Administratively Closed	5
Unfounded	3
Exonerated	3

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Allegations by year, 2021 to 2025

AnalysisRanked and folded by this site. The counts inside each panel are as reported.

Other Departmental Rule Violation

90 of 209

Other Departmental Rule Violation allegations reported by Middlesex County Sheriff's Department, by year
Year	counts
2021	13
2022	9
2023	21
2024	28
2025	19

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Demeanor

32 of 209

Demeanor allegations reported by Middlesex County Sheriff's Department, by year
Year	counts
2021	2
2022	9
2023	5
2024	8
2025	8

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Neglect of Duty

23 of 209

Neglect of Duty allegations reported by Middlesex County Sheriff's Department, by year
Year	counts
2021	0
2022	7
2023	12
2024	2
2025	2

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Other Criminal Violation

14 of 209

Other Criminal Violation allegations reported by Middlesex County Sheriff's Department, by year
Year	counts
2021	10
2022	4
2023	0
2024	0
2025	0

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Other (12 categories)

50 of 209

Other (12 categories) allegations reported by Middlesex County Sheriff's Department, by year
Year	counts
2021	4
2022	16
2023	6
2024	9
2025	15

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Against peers, 2025

How this grade was built →

Internal affairs investigations per 100 IA-investigated officers, 2025 (investigations per 100 IA-investigated officers)
Middlesex County Sheriff's Department	151.7
County median, county sheriff (1)	151.7
NJ median, county sheriff (20)	115.2

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Investigations per 100 officers named in that year's IA investigations (the Attorney General's own "Number of Officers" field, a distinct-officer count drawn from the IA case data itself, not a department headcount). A higher number is ambiguous on its own: it can reflect more misconduct, or a stronger internal reporting culture. Medians are computed within the same agency type only.

Report card

Grade F: Highest fifth of peers

On reported IA volume and discipline severity; see methodology

Combined standing: 88th percentile of 21 peers
Confidence: High confidence

Where this agency falls among its peers

The actual spread of discipline severity across Middlesex County Sheriff's Department's real peer group, not an assumed bell curve. If the group is skewed, it is shown skewed.

Peer group: County sheriff, all sheriff agencies (n=21)

Discipline severity: County sheriff, all sheriff agencies
Range	Agencies
0–50	6
50–100	8
100–150	6
150–200	0
200–250	1

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Middlesex County Sheriff's Department: 128.492 severity-weighted discipline per 100 IA-investigated officers: 88th percentile among County sheriff, all sheriff agencies (n=21).

How the grade is built

Three components, each a percentile within the peer group. The combined standing is their weighted mean, re-ranked among peers; the grade is the fifth of the peer group it lands in.

IA volumeweight 40%

69th percentileof 21 peers

119.0 investigations per 100 officers (multi-year mean)

Internal affairs investigations per 100 reported officers, averaged over the years where the agency reported both figures.

Discipline severityweight 40%

88th percentileof 21 peers

128.5 severity-weighted discipline per 100 officers, 2020-2025

Major discipline records weighted by sanction (termination 4, demotion 3, suspension 2, other 1) per 100 officers.

Allegation severityweight 20%

69th percentileof 21 peers

1.94 mean severity tier (1 low - 4 critical)

Mean severity tier of IA allegations across 2021-2025, using the published tier map; unknown values excluded.

What this grade can and can't tell you

The underlying data is self-reported by agencies, one yearly snapshot at a time.
Allegations are not findings; many complaints end unfounded, exonerated, or not sustained.
There is no arrest or call-volume denominator in this data, so nothing here is a per-capita misconduct rate. A genuinely independent staffing-based rate, sourced from the FBI rather than this grade's own data, appears above when available. It is a different measurement, not a more accurate version of the grade.
A higher internal affairs volume is ambiguous: it can indicate more misconduct, or a more robust oversight and reporting culture. The grade weighs it anyway, because volume is what the record offers; that choice is published, not hidden.
The grade is one lens. The records it reads are on this page above.

Where this agency ranks

AnalysisRankings compare agencies of the same type only, on figures as reported. A high rank is reported volume, not a verdict.^[16] How each metric is defined.

This agency's rank on each metric, among agencies of the same type
Metric	Value	Rank
IA per 100 investigated officers2025	151.7	3rd of 20 county sheriff
IA investigations2025	44	6th of 20 county sheriff
IA incidents2025	44	4th of 20 county sheriff
Major discipline2020-2025	18	5th of 17 county sheriff
Terminations2020-2025	5	2nd of 12 county sheriff

Major discipline records

5 major discipline records in 2025, up from 2 in 2020 (+150%).
Year	major discipline records
2020	2
2021	0
2022	8
2023	0
2024	3
2025	5

5 major discipline records in 2025, up from 2 in 2020 (+150%).

Major discipline records reported by Middlesex County Sheriff's Department, 2020-2025
Year	Officer	Rank	Sanction as reported	Src
2025	Maximillium Biedermann	Sheriff's Investigator	Suspended 120 days	^[17]
2025	Maximillium Biedermann	Sheriff's Investgator	Separated while IA pending	^[18]
2025	Edwin Mata	Lieutenant	Suspended 20 days	^[19]
2025	Gilbert Nielsen III	Lt.	Suspended 30 days	^[20]
2025	Deseree Reid	Sheriff's Officer	Suspended 6 days	^[21]
2024	Tyrell Cabbell	Sheriff's Investigator	Separated while IA pending	^[22]
2024	Janaysia James	Sheriff's Officer	Suspended 25 days	^[23]
2024	Michael Rodriguez	Sheriff's Officer	Suspended 8 days	^[24]
2022	David Demaio	Officer	Suspended 45 days	^[25]
2022	Lakia Torres	Officer	Suspended 6 days	^[26]
2022	Carol Diarmento	Recruit	Terminated	^[27]
2022	Keith Regis	Recruit	Terminated	^[28]
2022	Mercy Neal	Recruit	Terminated	^[29]
2022	Raymond Smith	Officer	Suspended 15 days	^[30]
2022	Elena Rivera	Officer	Suspended 15 days	^[31]
2022	Joshua Padilla	Officer	TerminatedSuspended 0 days	^[32]
2020	Edwin Mclean	Officer	Suspended 10 days	^[33]
2020	Mary Porter	Recruit	Terminated	^[34]

Every name links to the officer's record page with the agency's full synopsis and citation.

Fatal encounters recorded involving this agency

From the independent Fatal Encounters dataset, 2000-2021

In brief (written by this site from the records below)

One record in the Fatal Encounters dataset names Middlesex County Sheriff's Department, in 2013. The dataset records the force on it, in its own as-recorded terms, as Gunshot. Fatal Encounters is an independent, crowdsourced journalism project that documented deaths occurring during police encounters of any kind, including vehicle pursuits, suicides in police presence, and medical emergencies. A record is not a finding of fault, and it is not a discipline record from the Attorney General data shown elsewhere on this page. The project stopped collecting in December 2021, so the dataset is frozen and the absence of later records reflects the end of collection.

Fatal Encounters is an independent, crowdsourced dataset that documented deaths during police encounters nationwide from 2000 until its collection ended in December 2021.^[2] It records all deaths that occurred during a police encounter of any kind: vehicle pursuits, suicides in police presence, and medical emergencies are included alongside uses of force. A record appears here because Middlesex County Sheriff's Departmentis named in the record's as-reported agency field. A listing is not a misconduct finding, and it is not connected to the Attorney General discipline records above. See the methodology. Each record links to its own page with the full as-reported details.

Andrew B. Murnieks
November 21, 2013 · South Brunswick · Highest level of force as recorded: Gunshot

Public records requests

No records-request history is shown for this department. OPRAmachine, an independent site that files and publishes Open Public Records Act requests, has no public body that confidently matches this department, so this site does not assert one. That does not mean nobody has requested records from it. (Checked against a snapshot of OPRAmachine taken 12 July 2026.) See the methodology for how the match is made.

Questions and answers

What is a summary of Middlesex County Sheriff's Department's internal affairs and discipline record?

Middlesex County Sheriff's Department logged 44 internal affairs investigations in 2025 and 29 officers named in those cases. Its rate of 151.7 per 100 officers matched the Middlesex County median of 151.7 and ran well above the 115.2 median for sheriff agencies. A rate that far above the type median can mean more misconduct or a department that opens a file on more of what it hears. Sustained complaints were reported in 19 of the 44 investigations detailed for 2025. Other Departmental Rule Violation was the leading allegation category, ahead of Demeanor and Conduct Unbecoming/Discredit To The Agency. The 2020-2025 releases carry 18 major discipline records for the department, from 2020, 2022, 2024 and 2025, including five terminations. Middlesex County Sheriff's Department received an F on the report card, at the 88th percentile among 21 peers in the group of all sheriff agencies, a high-confidence grade.

How many internal affairs investigations did Middlesex County Sheriff's Department report in 2025?

Middlesex County Sheriff's Department reported 44 internal affairs investigations in 2025, according to New Jersey Attorney General data. 29 distinct officers were named in that year's IA investigations.

How many major discipline records does Middlesex County Sheriff's Department have?

Middlesex County Sheriff's Department has 18 major discipline records in the Attorney General's 2020-2025 releases, of which 5 were terminations. These are final, adjudicated actions, not allegations.

How many deaths during police encounters are recorded for Middlesex County Sheriff's Department?

The independent Fatal Encounters dataset contains 1 record naming Middlesex County Sheriff's Department, from 2013 through 2013. Fatal Encounters is a crowdsourced journalism project, not a government source, and it documented deaths that occurred during police encounters of any kind. Each record links to a page showing it exactly as the project recorded it.

Sources

[1]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 2314. Snapshot retrieved 2026-06-09. ↩
[2]Fatal Encounters, New Jersey subset. Fatal Encounters (fatalencounters.org). Fatal Encounters national dataset (2000-2021); collection ended December 2021. Retrieved 2026-07-10. https://fatalencounters.org/ ↩
[3]New Jersey Internal Affairs Officers, 2024-2025. New Jersey Office of the Attorney General. Officer counts summed across every Middlesex Co Sheriffs Dept row. Snapshot retrieved 2026-06-09. ↩
[4]New Jersey county boundaries. New Jersey Office of Information Technology, Office of GIS (NJOGIS). NJ_Counties_3857 (FeatureServer layer 0), https://services2.arcgis.com/XVOqAjTOJ5P6ngMu/arcgis/rest/services/NJ_Counties_3857/FeatureServer/0. 2020 boundary delineation. Retrieved 2026-07-27. Boundaries are generalized for display. This data set is not a survey document and must not be used as such. The polygons do not represent legal boundaries.
[5]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 280. Snapshot retrieved 2026-06-09. ↩
[6]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 1297. Snapshot retrieved 2026-06-09. ↩
[7]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 1802. Snapshot retrieved 2026-06-09. ↩
[8]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 783. Snapshot retrieved 2026-06-09. ↩
[9]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 2314. Snapshot retrieved 2026-06-09. ↩
[10]New Jersey Internal Affairs Investigations, 2024-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 1. Snapshot retrieved 2026-06-09. Aggregated from every Middlesex Co Sheriffs Dept row for 2025; row 1 is the header. ↩
[11]New Jersey Internal Affairs Data Download, 2021-2023. New Jersey Office of the Attorney General. Sheet "Sheet1", row 1. Snapshot retrieved 2026-06-09. Aggregated from every Middlesex Co Sheriffs Dept row for 2021. ↩
[12]New Jersey Internal Affairs Data Download, 2021-2023. New Jersey Office of the Attorney General. Sheet "Sheet1", row 1. Snapshot retrieved 2026-06-09. Aggregated from every Middlesex Co Sheriffs Dept row for 2022. ↩
[13]New Jersey Internal Affairs Data Download, 2021-2023. New Jersey Office of the Attorney General. Sheet "Sheet1", row 1. Snapshot retrieved 2026-06-09. Aggregated from every Middlesex Co Sheriffs Dept row for 2023. ↩
[14]New Jersey Internal Affairs Investigations, 2024-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 1. Snapshot retrieved 2026-06-09. Aggregated from every Middlesex Co Sheriffs Dept row for 2024. ↩
[15]New Jersey Internal Affairs Investigations, 2024-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 1. Snapshot retrieved 2026-06-09. Aggregated from every Middlesex Co Sheriffs Dept row for 2025. ↩
[16]Ranks computed by this site over the Attorney General internal affairs agency totals and major discipline releases, within agency type. Each ranking page lists every agency and its source rows. ↩
[17]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 440. Snapshot retrieved 2026-07-03. ↩
[18]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 441. Snapshot retrieved 2026-07-03. ↩
[19]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 442. Snapshot retrieved 2026-07-03. ↩
[20]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 443. Snapshot retrieved 2026-07-03. ↩
[21]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 444. Snapshot retrieved 2026-07-03. ↩
[22]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 1183. Snapshot retrieved 2026-07-03. ↩
[23]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 1184. Snapshot retrieved 2026-07-03. ↩
[24]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 1185. Snapshot retrieved 2026-07-03. ↩
[25]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 2237. Snapshot retrieved 2026-07-03. ↩
[26]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 2238. Snapshot retrieved 2026-07-03. ↩
[27]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 2239. Snapshot retrieved 2026-07-03. ↩
[28]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 2240. Snapshot retrieved 2026-07-03. ↩
[29]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 2241. Snapshot retrieved 2026-07-03. ↩
[30]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 2242. Snapshot retrieved 2026-07-03. ↩
[31]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 2243. Snapshot retrieved 2026-07-03. ↩
[32]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 2244. Snapshot retrieved 2026-07-03. ↩
[33]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 2884. Snapshot retrieved 2026-07-03. ↩
[34]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 2885. Snapshot retrieved 2026-07-03. ↩