A train derailed Wednesday morning in Clairton, shutting down a street in the area. The derailment happened in the area of State Street and Blair Avenue. Three empty train cars derailed, Allegheny County tweeted shortly after 8:30 a.m. State Street/Route 837 is closed in both directions between Maple Avenue and Walnut Street. No injuries have been reported. Emergency dispatchers said police and fire crews were called to the scene.