Boston police made an arrest after an early Sunday morning stabbing rampage in the city’s theater district left four people wounded, including one victim who suffered life-threatening injuries. Daryl Diamond, 39, of Dorchester, Massachusetts, is expected to be arraigned in Boston Municipal Court on four counts of assault with intent to murder and four counts of assault and battery by means of a dangerous weapon – knife, Boston police said. No motive has been announced in the stabbings. The incident first unfolded at approximately 2:10 a.m.