A seven-vehicle pileup in Glanbrook sent one person to hospital Thursday morning.

Treacherous road conditions caused several vehicles to slide along a stretch of Highway 6 around 6:30 a.m., said OPP Sgt. Dave Woodford. Hwy 6 is closed in both directions at Haldibrook Rd. and could be closed for several hours, Woodford said.

"It's slippery throughout the area," he said.

Three people were injured in the crash, with one transported to Hamilton General with serious injuries. The OPP reconstruction team is en route, Woodford said.

According to the OPP Twitter account, southbound traffic on Highway six is being rerouted at Leeming Road, while northbound traffic on Highway 6 is being rerouted at Chippewa Road.

Woodford says that roads and highways like Highway 6 and the 403 are particularly slippery Thursday morning, and advises drivers to use caution.