The man who robbed a downtown convenience store Tuesday night shot at witnesses as he fled with $170 in cash and a pack of Newport cigarettes, according to authorities from the College of Charleston and the Charleston Police Department.

No one was hurt during the robbery that was reported about 8:30 p.m. at Two Brothers at 131 Wentworth St. The store is less than a block west of the College of Charleston.

A co-owner operating the store told the police that a man wearing black clothing, gloves and a stocking mask walked in, showed his .40-caliber handgun and used "abusive language" in ordering the worker to open a cash register and his wallet. The robber stole the cash and cigarettes, then left through a back door.

As the robber parted, he told the co-owner, "If you call the police, I'll come back and kill you," according to public safety officials from the College of Charleston, which distributed an alert to students because of the crime's proximity to the school.

The alert said that witnesses saw the robber get into a silver Mercury Grand Marquis parked on Pitt Street, about a block away.

"The suspect saw the witnesses and got out of the car and yelled at them to go back into the house," the school's emailed alert said. "The suspect then took out a handgun and fired three shots left-handed at them before getting in the vehicle."

The robber was described as a black man in his 20s and about 6 feet, 2 inches tall. The store was not equipped with surveillance cameras.