A 31-year-old man is dead and a provincial police officer is in hospital after an incident in Fergus on Sunday.
The Special Investigations Unit has been called in and launched a probe into the incident.
The agency says police were called about a domestic disturbance at about 11 am.
It says officers tried to negotiate with the man, and at about 1:30 p.m. the man and officers had ``an interaction.''
The SIU says police shot at the man, and he died at the scene.
It says a police officer is in hospital with serious injuries.