Five people including a Peel paramedic were injured after a two-vehicle collision in Brampton involving a Peel paramedics rapid response unit.
It happened just before 3 p.m. in the area of Queen Street and Dixie Road.
Peel police said the other vehicle rolled over.
The four occupants of the vehicle were taken to a local hospital with minor injuries.
A Peel paramedic also sustained minor injuries.
Westbound lanes on Queen Street, east of Dixie Road, is down to one lane for police investigation.