Macomb County Sheriff's officials are looking for a 25-year-old man whom they believe shot and killed a Clinton Township man early Thursday morning in a Mount Clemens neighborhood.A homicide warrant has been issued for Perry Bernard Rouse Jr. for the shooting death of Charlie "C.J." McGowan, 24, following a shootout in a cluster of rental housing northeast of Northbound Gratiot and North River Road, officials say in a news release this afternoon.