Provincial police say a stretch of highway north of Toronto has been shut down in both directions after a crash involving a tractor-trailer spilled a dangerous substance on the road.
OPP Sgt. Kerry Schmidt says Highway 400 is closed between Highway 88 and Highway 9, north of Newmarket, Ont.
He says the tractor-trailer collided with another vehicle on the highway near Canal Road just before 1:30 p.m. Thursday.
Police say the liquid is believed to be a kind of paint thinner that is highly flammable, but say local firefighters have been able to contain the liquid.
They say, as a precaution, an evacuation was ordered for some people stuck in their vehicles near the scene of the crash.
The highway is expected to be closed for several hours.
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