KENNEBUNK, Maine — State police say the driver of a tractor trailer that overturned in the parking lot of the northbound service plaza on the Maine Turnpike in Kennebunk Monday morning likely fell asleep.

Maine State Police said the accident happened at approximately 7:30 a.m., when the truck went out of control, striking a sign and two light posts, then overturning onto its side, according to a release from state police spokesman Steve McCausland. The driver, Paul Comeau, 67, of Leeds, was not pinned inside the truck’s cab but needed help to get out and was freed by members of the Kennebunk Fire Department. Comeau was taken to Southern Maine Medical Center with non-life-threatening injuries.

The truck, owned by Chapman Trucking of Auburn, was hauling crushed glass, which spilled onto the parking lot, when the box trailer split open.

The truck slid about 100 feet in the parking lot and came within inches of striking a parked motor home, police said. The motor home was occupied by Bonnie and Kerry Bowden of Belmont, both of whom were uninjured. Their Jeep, being towed by the motor home, sustained minor damage and the couple was able to drive away.

State Police are investigating and troopers said Comeau will face charges once the investigation is further along.