JFK/UMass station

An MBTA Red Line train experiencing a mechanical problem prompted delays along the line in Boston’s Dorchester neighborhood Tuesday morning, the agency said. The MBTA didn’t immediately say what kind of problem the train had near JFK/UMass Station, but noted 20-minute delays on the Red Line for about an hour. Riders replied to the MBTA’s tweets about the delays...

A Dorchester man is facing multiple charges after he allegedly badly beat another man in an unprovoked attack on an MBTA Red Line train Friday night David Washington-Halfkenny, 40, of Dorchester, is charged with assault and battery with a dangerous weapon, armed robbery and carrying a dangerous weapon. He was ordered held without bail following his arraignment Monday pending a…