A man with a knife robbed a White Castle early Monday on East New Circle in Lexington.
Police said the robber was a white man about 5-foot-7 and 175 pounds, wearing blue jeans, a black shirt and a black ski mask.
The man came into the store and demanded money and then ran, police Sgt. Ann Welch said. A police tracking dog followed the man’s scent to a nearby parking lot, but he wasn’t found.
Investigators planned to review surveillance video.