Three people have been transported to a local hospital after a multi-vehicle crash halts traffic on Highway 400 in Barrie Saturday morning. The OPP tells CTV News the call came in just before 9:30 a.m. for the collision involving four vehicles on Highway 400 southbound at Mapleview Drive. Police say the people who were transported to hospital have minor injuries. Barrie Fire tells CTV News one person had to be extricated from their vehicle. Two firetrucks remain on scene and are in the process of clearing. Some lanes are blocked as tow trucks, police and fire remain on scene. Authorities say damaged vehicles and debris have been removed. Traffic is also sluggish on the northbound side of the highway as people slow down to take a look at what’s going on.