SIU concludes Thunder Bay investigation

December 31, 2025

The Special Investigations Unit announced it has closed its investigation into an incident involving a Thunder Bay Police Service officer that occurred in September 2025.

The SIU found no basis to believe that any officer committed a criminal offence and concluded its investigation.

With the conclusion of the SIU investigation, the Thunder Bay Police Service will now commence its required administrative review in accordance with Section 81 of the Community Safety and Policing Act.

The purpose of the administrative investigation is to review member conduct, the policing provided, and procedures all as they relate to the incident.

This administrative review will be reported to the Thunder Bay Police Service Board upon completion.

The Special Investigations Unit media release can be viewed online:
https://www.siu.on.ca/siu-concludes-investigation-into-thunder-bay-collision-en10888

Update: Thunder Bay Police Service sudden death investigation leads to second-degree murder charge

July 31, 2026
TB25050184 A Thunder Bay Police Service investigation into a sudden death on the city’s north end has resulted in a second-degree murder charge. On December 25, 2025, officers responded to a 911 call regarding a sudden death on Regent Street. On scene officers located a deceased man. The Major Crime Unit became involved in the investigation. On July 30, 2026, officers arrested a suspect at the Thunder Bay Jail. As a result of the continued investigation, 65-year-old Anthony FRIZZELL of Thunder Bay has been charged with second degree murder. The accused remains in custody with a future court date. Another individual was arrested on July 8, 2026, with the assistance of the Break, Enter, and Robbery Unit. The accused is facing an accessory after the fact to murder charge. The unnamed accused’s charges have not been read in court as they have been released under an undertaking with a future court date. The investigation remains ongoing. No further information is available at this time.

Police conducting homicide investigation

July 29, 2026
TB26029149

Update: Thunder Bay Police Service locate prisoner escapee from local correctional facility

July 25, 2026
TB26029085 The Thunder Bay Police Service has located an escapee from the Thunder Bay Correctional Centre. The investigation began on July 24, 2026, following a report from the Correctional Centre. Officers located and arrested the wanted individual around 1:30 AM on July 25, 2026. The Ontario Provincial Police assisted with the investigation. No further information is available at this time.