Harvard Medical School in Boston is seen in this file image from 2022. Brian Snyder/Reuters/File

The FBI’s Joint Terrorism Task Force and the Harvard University Police Department have arrested two Massachusetts men in connection with the explosion Saturday at Harvard Medical School, the FBI’s Boston field office said Tuesday.

The US Attorney’s Office is expected to hold an afternoon news conference at the federal courthouse in Boston.

The announcement comes after an apparently “intentional” explosion at a Harvard University medical building early Saturday .

An officer responded to the Goldenson building just before 3 a.m. ET and saw two people fleeing after a fire alarm was activated, according to Harvard police.

Surveillance footage circulated by police showed two masked people

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