June 11, 2019 12:25 pm MBTA Officials Try to Determine Cause of Red Line Derailment MBTA officials are trying to determine what caused a Red Line train to derail at the JFK/UMass Station in Boston’s Dorchester neighborhood Tuesday morning. US & World Videos 20:10 The faces of the Karen Read trial 3:44 What you need to know about kids with autism 2:14 Boston city council wants to put the brakes on street racing 2:18 Karen Read murder trial | Families struggle with tragedy as case unfolds 1:58 Virginia man granted bail in Turks and Caicos ammo case