Police are investigating three robberies that occurred at businessesin the U.S. 40 corridor between Nov. 7 and Tuesday.
An undisclosed amount of cash was stolen from the three businesses after suspects either threatened employees with guns or implied they had weapons, police said.
No one was injured in the robberies.
Investigators would not say whether the robberies may be related.
The most recent robbery occurred 4:50 a.m. Tuesday at the Shell Food Mart on Hanson Road in Edgewood, the Harford Sheriff's Office said.
Police said a man entered the shop and pointed a black handgun at the store clerk, who handed over the money.
The suspect then fled the business on foot.
The suspect is described as a black man about 18 years old and about 5feet, 4 inches tall, police said. He was wearing blue jeans, a green, hooded sweat shirt and a black leather jacket.
Aberdeen police are investigating a Nov. 8 robbery at the Wendy's restaurant at the Beard's Hill Shopping Plaza.
Police said a suspect entered the restaurant at 10:40 p.m., announced that he had a handgun and demanded money, which an employee did.
The suspect is described as a black manbetween 5-foot-5 and 5-foot-8, police said.
He was wearing a gray, waist-length jacket and dark pants.
The other robbery occurred 8p.m. Nov. 7 at the Moffett Video shop in the 2100 block of Pulaski Highway, the sheriff's office said.
Police said a suspect entered the shop, "implied" he had a weapon and demanded cash.
After he received the money, he fled.
The suspect is described as a white man about 30 years old and about 5 feet, 8 inches tall, police said. He was wearing a tan sweater and jeans.
Anyone with information about the robberies is asked to call the sheriff's office at 879-7929 or 838-6600 or Aberdeen police at 272-2121.