A man got away with an undetermined amount of cash after robbing the Speedway at 447 East New Circle early Friday morning, police said.
The man approached a woman who works as a clerk at the station while she stood outside during her break, Lt. Clay Combs said.
He threatened her and made her get cash out of the cash register inside, Combs said.
The suspect was described as a thin white man, 5-foot-8 to 5-foot-10, wearing a gray, hooded sweatshirt, Combs said.
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After taking the cash, the man ran toward Shaftsbury Road, Combs said. A Lexington police canine unit tracked the suspect but did not find him.
The robbery remains under investigation.