ROCKLAND, Maine — A 29-year-old former Knox County Jail guard is behind bars after police say he assaulted a woman Friday night by roughly pulling her out of a vehicle following a fight.

Adam D. Grierson, who was listed as residing at Mic Mac Campground in Union, was arrested on a count of domestic violence assault and criminal mischief.

A woman at a residence on Florence Street called police to report that she had an argument with Grierson, according to the affidavit filed by Rockland police Officer Alexander Gaylor. She told Gaylor that when she left the home and got into the driver’s side of a sport utility vehicle, Greirson also came out and ordered her out of the vehicle.

The woman said that when she refused, Grierson removed her seatbelt and ripped her out of the vehicle and she fell to the ground, suffering minor cuts and bruises, according to the affidavit. She also reported that he threw her purse and phone.

Police later found Grierson in the vehicle. He admitted he should not have done what he did, according to the affidavit.

Grierson had been sentenced in August 2014 to 15 months in jail with all but 60 days suspended and placed on probation for two years for one count of gross sexual assault. That offense occurred when he was a Knox County Jail guard and assaulted a female inmate.