STONEHAM, Mass. — A state trooper has been injured during an overnight car crash on Interstate 93.The trooper, who remains unidentified, was stopping to help a disabled vehicle when another car hit the cruiser from behind.WBZ-TV reports both the trooper and person in the first vehicle were taken to Winchester Hospital with back and neck injuries.No charges have been filed against the driver at this time.___Information from: WBZ-TV