Stormont, Dundas & Glengarry (SD&G) Ontario Provincial Police (OPP) officers are currently at the scene of a multi- vehicle collision on Highway 401, between Summerstown Road  in South Glengarry and McConnell Avenue in Cornwall.

Preliminary investigation has indicated that shortly before 6:00am, multiple tractor trailers left the roadway and entered the median westbound on Highway 401 between Summerstown Road and McConnell Avenue. Two passenger vehicles also left the roadway in the same area.

There are no reported injuries.

SD&G OPP, assisted by local Tow companies continue to process the scene to remove vehicles.

Highway 401 is closed to westbound traffic with indicated detours in place. The reopening time is unknown.