Emergency officials are asking motorists to proceed with caution after a crash in downtown Winnipeg that sent a pedestrian to hospital with serious injuries.

Police responded to St. Mary Avenue at Carlton Street Monday at about 4:10 p.m.

The pedestrian was rushed to hospital with serious injuries, police said.

Emergency officials are asking motorists to proceed with caution after a crash in downtown Winnipeg that sent a pedestrian to hospital with serious injuries. 0:36

Emergency crews closed off all four westbound lanes on St. Mary Avenue near Carlton and asked drivers to plan their trips accordingly.

The cause of the crash hasn't been released.