Lawrence police are investigating a reported armed robbery that took place late Friday in northern Lawrence.

Police say a black male wearing a ski mask entered a combination gas station and liquor store after 11 p.m. Friday in the 1800 block of West Second Street, displayed a knife and escaped with an undisclosed amount of cash.

Sgt. Damon Thomas, a Lawrence Police Department spokesman, said the suspect has not yet been identified and is estimated to be about 6 feet 2 inches and 180 pounds. Thomas said the man also wore a black jacket and black gloves.