FITCHBURG, Mass. (AP) – A Fitchburg man who was shot by a state trooper died Friday after being removed from life support.

Police said 30-year-old Preston Johnson was driving erratically and hit a parked car early Thursday in Fitchburg. He allegedly did not stop for local police and the state police were called in to help.

When he finally stopped, the trooper and a Fitchburg police officer approached. Johnson apparently drove at the two officers, and the trooper fired shots in self-defense, according to a lawyer for the state police union.

Johnson was on life support at UMass Memorial Medical Center as doctors awaited the arrival of his mother from Mississippi before removing the equipment.

Worcester District Attorney John Conte, whose office is investigating the shooting, said Preston was pronounced dead Friday afternoon after he was taken off a ventilator by a doctor. He had been declared brain dead Thursday, Conte said.

Conte said Preston’s body will be sent to the medical examiner’s office for an autopsy that is expected to be completed Monday. He said the investigation of the shooting is continuing.

“I’ve got to get the autopsy report, and we’ve got to complete our interview of the officers and any other witnesses that there may be out there,” Conte said.

The trooper, identified by the Telegram & Gazette of Worcester as Donald C. Gray, an 11-year veteran, was hospitalized with a minor hand injury. The trooper was placed on paid administrative leave while the shooting is under investigation, state police spokesman Thomas Ryan said.

Johnson served four years in prison for shooting at two Fitchburg State College students. His license was suspended in June for numerous traffic violations, including speeding and failing to obey an officer.