News Release

News Release

SIU Investigating Fatal Shooting in Mississauga

Case Number: 25-OFD-512   

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Mississauga, ON (11 December, 2025) ---
The province’s Special Investigations Unit is investigating after a 19-year-old man was fatally shot by a Peel Regional Police officer at a Mississauga residence this afternoon.

Preliminary information suggests the following:
  • At approximately 2:30 p.m., police received a call about an injured man at a residence on Greensboro Drive. It was later determined the man was stabbed by a family member in a residence nearby and was seeking help at a neighboring home.
  • The injured man, identified as a 39-year-old male, was taken to hospital, while tactical as well as K9 officers responded to the wounded man’s home. Police attempted to negotiate with the man believed responsible for stabbing the man. Officers entered the residence, there was an interaction, a conducted energy weapon was discharged, and the man was shot.
  • He was taken by ambulance to hospital where he was pronounced deceased a short time later.
Three investigators and three forensic investigators have been assigned to the case. The post-mortem is being scheduled. 

The SIU is urging anyone who may have information about this investigation, including video or photos, to contact the lead investigator at 1-800-787-8529 or online at: https://siu.on.ca/en/appeals.php


If you or someone you know is an affected person in need of support, please call the Affected Persons Program General Referral Line at 1-877-641-1897 or click here for more information: siu.on.ca/en/apc.php

The SIU is an independent government agency that investigates the conduct of officials (municipal, regional and provincial police officers, police officers with the Nishnawbe Aski Police Service, special constables with the Niagara Parks Commission and peace officers with the Legislative Protective Service) that may have resulted in death, serious injury, sexual assault and/or the discharge of a firearm at a person. All investigations are conducted by SIU investigators who are civilians. Under the Special Investigations Unit Act, the Director of the SIU must

  • consider whether the official has committed a criminal offence in connection with the incident under investigation
  • depending on the evidence, cause a criminal charge to be laid against the official where grounds exist for doing so, or close the file without any charges being laid
  • publicly report the results of its investigations

Lisez ce communiqué en français.

Kristy Denette, siu.media@ontario.ca
SIU Communications/Service des communications, UES