Thunder Bay Police Service investigation leads to charges

June 1, 2026

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A Thunder Bay Police Service investigation into multiple assaults has led to charges.


Officers with the Primary Response Unit responded to reports of an assault in the Red River Road area, on May 29, 2026, just after 1:00 PM with the assistance of the Emergency Task Unit which was on patrol as part of Project Support.


On scene officers located an individual with injuries consistent with a stabbing.


The individual attended a local hospital for treatment of their injuries.


Officers were able to identify, locate, and arrest a suspect nearby.


Further investigation led to additional victims being identified.


No additional injuries were reported.


As a result of this investigation, 54-year-old Stephane ST-CYR of Quebec is facing the following charges: 

• Aggravated assault 

• Assault with a weapon (two counts)

• Possession of weapon for a dangerous purpose


The accused was remanded into custody following their first court appearance. 


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
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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.