Three people were injured in a train fire that snarled the morning commute for riders of San Francisco’s Bay Area Rapid Transit system on Thursday, transit officials said. Passengers were evacuated after the fire broke out on the outside of a three-car train in Oakland around 4:30 a.m. and three people were taken to local hospitals with minor injuries, BART spokesman Jim Allison said in a statement. No details were immediately available about the nature of the injuries. Several stations were closed before service was restored roughly four hours later on the affected East Bay lines, Allison said.