Victim identified as Raymond Holloway-Creighton, 26, of Dorchester.
Boston Police report a man, believed to be in his 20s, was shot at 911 Massachusetts Ave., near Chesterton Street, around 3:30 a.m.
He was taken to a local hospital, where he was pronounced dead.
Around 8:45 p.m. on Thursday, a man wound up at the Boston Medical Center emergency room with a stab wound to the chest. Police found the knife that may have been used outside outside the hospital emergency room.