Ontario’s police watchdog is investigating after a 26-year-old man was shot and killed by police in Welland.

Investigators said tactical members of the Niagara Regional Police Service responded to a call Saturday around 9:15 p.m. to assist with an arrest of a man wanted by Peel Regional Police.

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The Special Investigations Unit says the man shot at police.

Officers returned fire before deploying gas into the home, which forced the man to flee.

Police say after the man left the house, further gunfire was exchanged and the man was struck.

Emergency responders treated the man, but he was pronounced dead at the scene.

The SIU is seeking any information, including video or photos.