Authorities don’t know exactly what sparked a January 18 fistfight between two men at the corner of North Royal and Pendleton streets, but say they knew each other.

The two men involved had been at the same house earlier in the night, officials said. They met up again as the victim made his way to a store at 7:39 p.m. The assailant punched him in the face and fled, said Alexandria Police Department spokeswoman Ashley Hildebrandt.

The attack left the victim, who contacted police, with minor injuries. The suspect has not yet been caught.