A motorcyclist has died after a single-vehicle crash in Markham, Ont.

OPP say the crash happened on the northbound Highway 404 ramp to the eastbound Highway 407 ramp.

Investigators say the motorcycle may have been travelling at a high speed at the time of the crash. The impact from the collision split the motorcycle in two.

The north and southbound ramps to Hwy. 404 have been closed.