Fire heavily damaged a vacant house in Shreveport. It happened at 10:32 p.m. Friday in the 600 block of West 83rd Street in Shreveport, Caddo 911 dispatch records show. The fire also caused minor damage to a house next door. At one point, firefighters had more than a dozen units and police had a couple of units on the scene. There’s no immediate word on what sparked the fire.