A Green Line train derailed in a switching area near Government Center Wednesday evening. The train, which was carrying no passengers, went off the rails as it was moving at low speed to an outbound platform from a turnaround loop.
A power outage forced MBTA officials to close down parts of the Green Line on Saturday. The problem was caused by an overhead cable near Arlington Station. At least one trolley was evacuated through the tunnels during the two hours the service was shut down.