The Special Investigations Unit (SIU) is investigating the situation surrounding the death of a 34-year-old man after police attended a disturbance call in Mississauga on Tuesday night.

Peel Regional Police officers were called to a residence near Morningstar and Cambrett drives around 9 p.m.

Police said officers had an interaction with a person at the home. The SIU said the interaction involved the use of a conducted energy weapon.

According to the SIU, the man went vital signs absent and was transported to hospital where he was pronounced dead.

A witness, who lives in the area and knew the man involved, told CityNews he saw police arrive at the home that evening.

“Cops showed up yelling ‘open up the door’,” he explained. “The door opened. Guns were drawn, Tasers were drawn. They tased the kid, doors were shut. [They] dragged him outside the front door and next thing you know they’re pumping his stomach.”

The SIU is an arm’s length agency that investigates reports involving police where there has been death, serious injury or allegations of sexual assault.