LONDON, ONT. -- OPP continue to investigate a fatal crash near Mildmay.

The crash happened about 4 p.m. Tuesday on Highway 9, just south of Concession Road 12 East, and involved two vehicles.

Police say their preliminary investigation determined a compact vehicle was northbound on Highway 9, when for unknown reasons, the driver crossed the centre line into the path of a southbound transport truck, resulting in a head-on collision ensued.

The driver of the compact car was pronounced dead at the scene. He has been identified as Kenneth Bruce Macdonald, 75, of Teeswater.

The other driver was not injured.