MILWAUKEE (AP) _ Authorities are looking for a fourth suspect in a shooting on an interstate in Milwaukee County.
Sheriff David Clarke says people in a minivan and another vehicle were shooting at each other in a ``running gun battle'' on Interstate 43 Tuesday afternoon. One vehicle struck the other and the minivan spun into the ditch near Fox Point. Three people in the van were arrested. Authorities say a fourth person left the scene.
No other vehicles were struck by gunfire on the busy interstate. The incident backed up traffic for miles and took several hours to clear.