A male driver is dead following a tractor-trailer crash on Highway 401 in Oshawa early Tuesday morning.
Ontario Provincial Police said the single-vehicle collision happened around 5 a.m. on the eastbound lanes near Harmony Road.
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Police said the vehicle left the highway and veered into the ditch on the right-hand side and struck a tree.
READ MORE: OPP officer injured after being hit by vehicle during traffic stop on Highway 400
Authorities said the male driver was pronounced dead at the scene.
The two right lanes of eastbound Highway 401 are closed for the investigation.