SIU updates investigation into fatal shooting of man involved with East Gwillimbury, Ont., stabbing

Click to play video: 'York Regional police continue mass stabbing investigation' York Regional police continue mass stabbing investigation
WATCH ABOVE: Catherine McDonald spent the day in Mount Albert where the SIU is also investigating the fatal shooting of the lone suspect – Feb 8, 2021

Ontario’s police watchdog, the Special Investigations Unit, said it’s interviewed three civilian witnesses and has completed a canvass of the area in East Gwillimbury, Ont., where a man who was involved with a stabbing was fatally shot on Saturday afternoon.

On Saturday, York Regional Police officers were dispatched to a home on Ridge Gate Crescent in Mount Albert for what the SIU said was a weapons call.

When officers arrived at the scene, they found a 38-year-old woman dead. Three other victims — a two-year-old boy, a four-year-old boy and a 35-year-old woman — were taken to the hospital with serious injuries.

Read more: Boys, aged 2 and 4, expected to survive after East Gwillimbury stabbing: police

When police went inside the home, the SIU said they became involved with an interaction with the 37-year-old male suspect. As a result, two officers discharged their firearms and the man was hit. He was pronounced dead at the scene.

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As of Monday, the SIU said investigators are in possession of cartridge cases and projectiles that were seized at the scene, as well as the subject officers’ firearms. These items will be sent to the Centre of Forensic Sciences for further examination.

Investigators are also now in possession of a knife that was found at the scene.

The SIU said the officer, who was designated as a witness, was interviewed Sunday. The two subject officers haven’t been interviewed yet.

The SIU has also retrieved video footage from two sources. Five investigators and four forensic investigators from the SIU have been assigned to the case.

Read more: Young child, infant among 3 injured after stabbing in East Gwillimbury, woman dead

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The SIU will not be releasing the name of the man who was shot at the request of the family. This aligns with the SIU’s name release policy, which requires permission from next of kin.

On Sunday, police said the three victims who were taken to the hospital are expected to survive.

It’s unclear what led up to the stabbing and what the relationship was, if any, between the man and the victims.

Anyone with information is asked to contact the SIU’s lead investigator on the case at 1-800-787-8529. Those with video surveillance footage are asked to submit it through the SIU’s website.

— With files from Global News’ Ryan Rocca

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