Two Massachusetts men arrested in connection with an explosion Saturday at Harvard University are accused of detonating a firework inside a laboratory locker in a medical building, federal authoritie...

Two Massachusetts men are in police custody, accused of using fireworks inside a research lab at Harvard Medical School.

According to charging documents, surveillance cameras captured two men later identified as Patterson and Cardoza shortly after 2 a.m. on Saturday walking toward the Harvard Medical School campus while...