At least 14 people were injured in a ski lift accident at a Wisconsin resort late Thursday.

The accident happened Thursday night at the Devil's Head ski resort near Merrimac, WI. WKOW-TV reports the chair lift was full of people when it malfunctioned and sent riders backward. Lift operators could nothing to stop it as the chairs smashed into a back wall.

Several skiers jumped as much as 20 feet from the lift to reach safety. Authorities say at least three of the people taken to area hospitals had serious injuries.