Thomas Hanley of Henniker is facing one year in jail after pleading guilty to charges that he left his girlfriend’s body on the side of Interstate 89 after she jumped out of a moving vehicle.

Hanley, 31, pleaded guilty at the Merrimack County Superior Court on Monday to charges of stalking and conduct after the accident for leaving his girlfriend, Gina Maiorano, on the side of the road after a fatal accident in June.

On June 5, when Hanley was behind the wheel of his white Chevy Tahoe, Maiorano jumped out of the moving vehicle, sustaining fatal injuries.

Hanley “failed to stop” or provide information on the incident, according to court documents. Police were alerted after a passerby noticed a body in the breakdown lane of I-89 North near Exit 4 in the town of Hopkinton. It wasn’t until a passerby spotted Maiorano’s lifeless body in the breakdown lane of I-89 north near exit 4 in the town of Hopkinton that authorities were alerted.

Hanley later told his father that he didn’t stop because he was high on meth.

Autopsy reports found Maiorano’s cause of death as blunt force trauma to the head. She was 27.

The couple had a long history of domestic violence. Just five months before Maiorano’s fatal accident, Hanley was charged by Weare police with four separate domestic violence charges. Witnesses reported seeing him push, berate and forcibly return Maiorano to their vehicle.

Hanley faces a suspended sentence of three-and-a-half to seven years in prison for the conduct following the accident charge. Upon his release, Hanley will be subject to probationary measures.