A Liberty woman was injured April 7 when her car went off the road, struck a rock wall and then hit a tree.

Waldo County Sheriff’s Office Chief Deputy Bob Keating said Margaret A. Sweet, 61, was driving a 2007 Ford Mustang south on Route 137 in the vicinity of Payson Hill in Knox when she went off the right side of the road, came back across the paved road and then went off the road on the left side. The car entered a ditch and struck a rock wall, causing the car to be vaulted into the air and strike a tree, according to Keating.

No other vehicles were involved in the accident, which was reported around 7:40 a.m.

Deputy Gerry Lincoln responded to the call, and Detective Matt Curtis assisted him at the scene, Keating said. Sweet, who was wearing a seatbelt, was trapped in her vehicle, and the Jaws of Life were required to free her.

Keating said Sweet was taken to Waldo County General Hospital in Belfast by Brooks Ambulance, where she was treated for injuries he described as “non-life threatening.” Members of the Brooks and Waldo Fire departments responded, as did emergency personnel from Knox.

The accident remains under investigation, according to Keating. He said there were no signs that Sweet was speeding, and he said police believe a medical condition may have been a contributing factor in the crash.