Police allege that the shooter, who has not been found or charged in an arrest warrant, was a passenger in the car before and after multiple shots were fired.
Arnold M. Davis, of New York City, was shot in the foot at about 5:30 p.m., after he was approached by a man as he walked with a friend in the alley between West Franklin Street and West Washington Street. The shots rang out a few feet from the rear of Waypoint Bank and the Washington County Administrative Building.
Davis was treated at Washington County Hospital and released the next day.
The shooter is described as a black man in his early 20s, about 6 feet, 1 inch tall and weighing about 150 pounds, records state.
Since the day of the shooting, Henry has been held without bail at the Washington County Detention Center on unrelated charges filed in Washington County, police have said.
Police said Henry was taken into custody less than one hour after the shooting during a traffic stop in the 500 block of South Burhans Boulevard. He was not charged in the shooting for more than a week. Officers found no guns in the car or on Henry, police have said.
According to court records, Henry failed to appear at a May 25 Washington County Circuit Court hearing on two counts of manufacture/distribution of cocaine and one count each of possession of, possession with intent to distribute and conspiracy to distribute cocaine.
Hagerstown Police Department Capt. Charles Summers said Wednesday that the investigation into the identity and possible location of the shooter was continuing.