Police are investigating a double shooting in Largo, Md. (Prince George's County Police)

An 18-year-old woman was killed and a man was injured in a double shooting early Wednesday in Prince George’s County, authorities said.

The incident happened about 1:45 a.m. at Swiss Gap and Prince Place in Largo.

Police later identified the woman as Allyssa Banks, 18, of Upper Marlboro. When police arrived, she was suffering from a gunshot wound. She was taken to a hospital, where she was pronounced dead. Authorities said the wounded man’s injuries do not appear to be life-threatening.

Police said Banks and the wounded man knew each other. They did not detail their relationship.

A monetary reward is being offered in the case, but police did not say how much. Police said anyone with information on the shooting is asked to call 866-411-TIPS.