FBI says 2 men arrested in Harvard Medical School building explosion

The FBI said on Tuesday that two men from Massachusetts were arrested following an explosion at the Harvard Medical School building over the weekend.

FBI Boston posted on X on Tuesday regarding the arrests, saying, "BREAKING: Special agents & officers with FBI Boston's Joint Terrorism Task Force & Harvard University Police Dept. have arrested two Massachusetts men in connection with an explosion at Harvard Medical School. Details to follow at a 1:00 p.m. news conference with [U.S. Attorney's Office for the District of Massachusetts] at the federal courthouse in Boston."

Early Saturday morning, an officer who responded to a fire alarm encountered two people running from the Goldenson Building on Longwood Avenue, according to Harvard University Police, NBC Boston reported. The explosion occurred on the building's fourth floor, which includes labs and offices associated with the medical school's Department of Neurobiology.

The Boston Fire Department said the explosion was intentional, no one was injured, and officers did not find additional devices in a sweep of the building, according to police.

“The small section of the fourth-floor hallway where the explosion took place has been cleared and is fully operational. There was no structural damage to the building, and all labs and equipment remain intact,” medical school officials said in a statement.