The victim, Arnold M. Davis, of New York City, was shot in the foot while walking with a friend in Warenam Alley, near Jonathan Street, the Hagerstown Police Department said in a news release.
Davis and the other man were walking in the alley between West Washington and West Franklin streets when a green car drew near, according to police. A passenger got out of the vehicle and fired several times at Davis before leaving the area, police said.
Sgt. Curtis Wood said a man believed to be present at the time of the shooting was being questioned Wednesday at 10:30 p.m.
The man, who is believed to have ties to Hagerstown and New York City, was taken into custody during a traffic stop in the 400 block of South Burhans Boulevard about 15 minutes after the shooting, Wood said. No weapons were found inside the car, he said.
Davis, who was struck at least once, was questioned and given emergency treatment near the rear wall of a building housing Waypoint bank and the Washington County Administration Building.
A brief downpour began as emergency responders loaded the victim into an ambulance. Investigators gathered some of the victim's garments and other evidence, including a bloody sock, from the rain-soaked asphalt.
Minutes after the shooting, a Hagerstown official told Washington County Commissioner James Kercheval, who was not present at the time of the shooting, that "it happened 20 yards in front of us."
"What did I say - I told you to be careful," Kercheval said as he entered a sport utility vehicle with the visibly shaken man, who was told by police to go to police headquarters to be interviewed.
Kercheval said Wednesday night that he was inside the building when the shots were fired and was surprised to be greeted in the parking lot by any commotion other than people taking cover from a passing storm.
"I walked out and saw lights and thought, 'what the heck is going on,'" Kercheval said.
Witnesses said the green car was driven rapidly toward Prospect Street immediately after the shooting.
"I didn't see it, but I heard the shots -one, one-two-three," said Gary Rudd, an employee at nearby Auto One.
"Then, I saw him limping around," he said, pointing across the lot at the victim.
Police ask that anyone with information on the shooting call the Criminal Investigation Division at 301-790-3700.