A Portland man was charged early Sunday morning with stabbing a member of a Northern Light ambulance crew at a convenience store in Bangor.

Bangor police in a release identified the suspect as 37-year-old Justin Hill of Portland. The victim told police that Hill was a stranger and he did not know why Hill attacked him.

The stabbing took place around 2:30 a.m. Sunday at the Circle K convenience store on Odlin Road in Bangor. When police officers arrived, they encountered Hill on the ground, where he was being restrained by a person who witnessed the incident.

The victim, whose name was not released, was transported to a hospital, where he was treated for cuts to his head and hand.

Police arrested Hill and transported him to the Penobscot County Jail, where he was charged with aggravated assault, a Class B felony.