A co-worker of the Budweiser truck driver who was shot Monday in North Charleston told authorities that he was unloading beer when bullets peppered the truck and whizzed at them.

One hit the deliveryman in the side, just below his right armpit.

The worker’s account, revealed through a copy of his 911 call obtained through a Freedom of Information Act request, hints at the brazen and, so far, unexplained daytime shooting outside an East Montague Avenue convenience store.

“We were unloading beer off the back of the truck, and all of a sudden, this guy on the corner just started shooting at us,” the caller said. “He fired about 15 shots or so at the truck, and us.”

The wounded man, 24-year-old David Scott Jr. of Goose Creek, was taken to Medical University Hospital, where he was expected to recover. His uncle told The Post and Courier after the shooting that Scott is a soldier preparing to deploy to Afghanistan.

Witnesses described the gunman as a black man whose head was shrouded by the black hood from his black sweatshirt. The slim man also wore black shoes and black jeans, they told the police, and was in his early 20s.

The North Charleston Police Department had developed no information about the man’s identity, spokesman Spencer Pryor said Tuesday.

When they arrived at the Neighbor Store at 1740 E. Montague Ave., officers found Scott bleeding in the back bed of the Budweiser truck.

The victim’s co-worker told the authorities that Scott was shot as he was standing on the cargo lift and unloading carts full of various brands of canned beer.

He then dragged Scott farther into the truck to escape further injury, according to an incident report.

The gunman took off running toward the railroad tracks, he told 911 dispatchers.

“Call me an ambulance,” Scott is heard saying in the background. He groaned.

It’s unclear exactly how many shots were fired.

The report stated that officers found five .380-caliber spent cartridges in the intersection of Luella and East Montague avenues.

Motorists driving by the store also called 911 in a panic, hoping to help officers track down the beer man’s assailant.

“We just saw a guy run across the street shooting multiple shots, right in front of us,” a woman told a dispatcher.

Someone else in the background of that call said, “I have never in my entire life seen that.”

“I was just in normal traffic,” another caller said, “and I just saw a shooting in North Charleston.”

Police dogs picked up a scent and followed it to Piedmont Avenue, which runs north into the Ferndale community.

Reach Andrew Knapp at 937-5414 or twitter.com/offlede.