Authorities are investigating the shooting of a New York State trooper on Long Island’s Southern State Parkway, and the man they believe to be responsible is still on the loose. According to investigators, the trooper was patrolling on the westbound highway near exit 17 in West Hempstead shortly before midnight when he saw a black sedan parked illegally on the side of the road. He pulled up behind it, noted the license plate and got out of his cruiser. As he approached the back of the black sedan, investigators say, the trooper heard a series of shots and realized he had been wounded in the leg. He retreated for cover behind his vehicle as the suspect drove off. He was later able to tend to his own wounds before being taken to a hospital, where he was last said to be in stable condition. He required surgery, officials said. The suspect fled the scene in possibly a Dodge Charger, with New Jersey temporary tag NJ 997636T, officials said. State Police say they are conducting an “all-out” search for the vehicle and ask anyone with information to call authorities. The highway was closed in the area for a time to assist the investigation. Anyone with information to call at 631-756-3300.