Screenshot 2025-09-27 at 8.39.48 AM

Manhattan Police Department Promotes Garrison to Commander, Diaz to Sergeant

Spread the love

Article Summary: The Manhattan Police Department solidified its command structure with the promotions of William Garrison to the rank of Commander and Bryan Diaz to Sergeant, who were both officially sworn in at the village board meeting.

Manhattan Police Promotions Key Points:

  • Commander William Garrison is a 20-year law enforcement veteran and a graduate of Northwestern’s prestigious School of Police Staff and Command.

  • Sergeant Bryan Diaz brings over nine years of law enforcement experience to his new leadership role.

  • Both officers were sworn in by Mayor Mike Adrieansen in a ceremony attended by their families and fellow officers.

MANHATTAN – The Manhattan Police Department celebrated the promotion of two of its officers Tuesday night, filling key leadership roles within the department. William Garrison was sworn in as Commander and Bryan Diaz was sworn in as Sergeant before the Village Board and a room full of family and colleagues.

Mayor Mike Adrieansen administered the oath of office to both men, highlighting their extensive experience. Garrison, a 20-year veteran, is a graduate of the Northwestern Center for Public Safety’s School of Police Staff and Command. Diaz has over nine years of law enforcement experience, with expertise in truck enforcement and field training.

“I’m humbled and appreciative of the chief and the police department supporting me in this role, and I look forward to doing some good things,” Commander Garrison said after being sworn in.

Sergeant Diaz also thanked the village and his department. “It’s been a great move coming to Manhattan,” he said. “From the citizens, the trustees and the police department, everyone’s had my back and welcomed me. So, I appreciate everything you guys have done for me.”

The promotions reaffirm the village’s commitment to public safety by completing the command structure within the police department.

Leave a Comment





Latest News Stories

Black and white speed limit 25 sign

Will County Board Advances New Speed Limits in Green Garden and Frankfort Townships

Will County Public Works & Transportation Committee Meeting | November 2025 Article Summary: The Will County Board approved new speed limits for a section of Stuenkel Road in Green Garden...
Will County Logo Graphic

New Lenox Garage Variance Denied After Neighbor Cites ‘Massive’ Scale and Neighborhood Impact

Will County Planning and Zoning Commission Meeting | November 4, 2025 Article Summary: The Will County Planning and Zoning Commission unanimously denied a New Lenox Township homeowner's request for a variance...
manhattan elwood library graphic.2

Library Board Adopts New Cell Phone Stipend Policy for Employees

Manhattan-Elwood Public Library District Board Meeting | September 2025 Article SummaryThe Manhattan-Elwood Public Library District Board of Trustees has approved a new policy to provide a cell phone stipend for...
Screenshot 2025-11-05 at 3.24.09 PM

Manhattan Announces Proposed 6% Property Tax Levy Increase

Manhattan Village Board Meeting | November 4, 2025 Article Summary: The Manhattan Village Board has announced a proposed 2025 property tax levy of $3,828,252, which represents an approximate 6.09% increase...
Joliet-Junior-college.-Graphic-Logo.5

JJC Celebrates “Future Wolves” Partnerships with Joliet and Troy School Districts

Joliet Junior College Board of Trustees Meeting | October 15, 2025 Article SummaryJoliet Junior College celebrated its "Future Wolves" initiative by issuing proclamations honoring its inaugural partnerships with Joliet Public...
Screenshot 2025-11-06 at 4.17.20 PM

State Veto Session Passes Energy Bill Limiting County Zoning, Approves Toll Hike for Mass Transit

Meeting Summary and Briefs: Will County Legislative Committee for November 4, 2025 Article Summary: A state lobbyist reported to Will County that the Illinois General Assembly passed a major energy bill...
will county board graphic

Commission Approves Peotone-Area Farmhouse Split, Overruling Staff’s “Spot Zoning” Concerns

Will County Planning and Zoning Commission Meeting | November 4, 2025 Article Summary: The Will County Planning and Zoning Commission approved a request to rezone a 1.75-acre portion of a larger...
Screenshot 2025-11-05 at 4.18.19 PM

Will County Finance Committee Hits Impasse on 2025 Tax Levy, Postpones Budget Votes

Will County Finance Committee Meeting | November 2025 Article Summary: The Will County Finance Committee postponed votes on the 2025 tax levy and the 2026 budget after a contentious debate...
manhattan park district graphic.1

Manhattan Park Board Tables Decision on Site Plan for Potential Development

Manhattan Park Board Meeting | September 2025 Article Summary: The Manhattan Park Board postponed a decision on a proposal from Arete Design Studio to create a concept site plan, citing concerns...
Screenshot 2025-11-06 at 4.17.15 PM

Federal Lobbyists Brief Will County on Government Shutdown, Warn of SNAP and TSA Disruptions

Meeting Summary and Briefs: Will County Legislative Committee for November 4, 2025 Article Summary: Will County’s federal lobbyists reported that the ongoing government shutdown, now the longest in U.S. history, is...
Will County Logo Graphic

Commission Approves Mokena-Area Garage Variance Over Village’s Objection

Will County Planning and Zoning Commission Meeting | November 4, 2025 Article Summary: The Will County Planning and Zoning Commission approved a variance for a new garage in unincorporated Frankfort Township...
Screenshot 2025-11-05 at 4.02.49 PM

Will County Committee Advances Gougar Road Bridge Project with Over $540,000 in Agreements

Will County Public Works & Transportation Committee Meeting | November 2025 Article Summary: The Will County Board approved two key agreements for the Gougar Road bridge project in New Lenox,...
Screenshot 2025-11-05 at 3.23.49 PM

Village Administrator Jeff Wold Resigns; Marc Nelson Appointed Interim

Manhattan Village Board Meeting | November 4, 2025 Article Summary: Manhattan Village Administrator Jeff Wold announced his resignation on Tuesday, November 4, 2025, to return to a career in law...
manhattan elwood library graphic.4

Manhattan-Elwood Library Board Reviews 2024-2025 Financial Audit

Manhattan-Elwood Public Library District Board Meeting | September 2025 Article SummaryThe Manhattan-Elwood Public Library District Board of Trustees received the results of its annual financial audit for the 2024-2025 fiscal...
Joliet-Junior-college.-Graphic-Logo.4

JJC Receives Surprise $1.9 Million from IRS Employee Retention Credit

Joliet Junior College Board of Trustees Meeting | October 15, 2025 Article SummaryJoliet Junior College has received an unexpected $1.9 million windfall from the federal Employee Retention Credit (ERC), a...