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A semitrailer truck driver smashed a window to climb out of his cab as it sank after plunging into an icy lake in central Minnesota on Monday.

Shawn Curry, 48, of Olivia, was driving north on Hwy. 71 about 9:45 a.m. when his rig crashed through a guard rail, went off a bridge and landed in Sauk Lake, the Minnesota State Patrol said.

The 2013 Peterbilt Tractor was carrying animal parts when it veered to the right as it crossed the bridge north of Sauk Centre. It was not immediately clear what caused the crash, said Sgt. Jesse Grabow.

Curry, who was wearing a seat belt, was taken by ambulance to Sauk Centre Hospital where he was treated for non-life threatening injuries.