A motorcyclist has serious injuries following a two-vehicle crash involving a truck on Highway 400 in Aurora, police tell 680 NewsRadio.
Ontario Provincial Police (OPP) officers were called to the southbound section of the highway near Aurora Road around 10 a.m. on Monday.
The southbound 400 has been reduced to one lane as the collision investigation continues.
Police say drivers should consider an alternate route as delays are expected in the area.