Highway 40 is currently closed south of Grande Prairie due to a serious accident involving multiple vehicles at township road 692.

A pickup truck and semi were in the collision at 7:45 a.m., but more semi trucks have since become involved.

Police are asking the public to avoid the area until it is cleared and deemed safe, with 5-1-1 Alberta warning of delays up to six hours.

At this time the cause of the accident is unknown.