Essex County OPP are investigating after a serious two-vehicle crash sent a motorcyclist to hospital with life-threatening injuries.

Emergency responders were called to the scene on Huron Church Line around 4:25 p.m. Tuesday.

Police say a tractor trailer and a motorcycle collided in the southbound lanes of Huron Church, south of the E.C. Row Expressway.

The motorcycle rider suffered life-threatening injuries in the collision.

The southbound lanes of Huron Church Line were closed between E.C. Row and Bethlehem Avenue while the OPP's Technical Collision Investigators worked at the scene.

The eastbound EC Row off-ramp to Huron Church were also closed due to the collision, however as of Wednesday moring all closures have been lifted.

Further information is expected to be provided as it becomes available.