Beloit police are investigating a second shots-fired incident in as many nights.  Police were called to the 1400 block of Townline Avenue a little before 9:00 p.m. Wednesday for a report of gunfire.  Officers found an unoccupied vehicle had been struck by gunfire.  Police were called to the 800 block of 10th Street the night before. An unoccupied vehicle was struck by gunfire in that incident as well.  No one has been reported injured in either case.