Authorities release photo of suspect in ‘intentional’ Harvard explosion
Fox News senior correspondent Jonathan Serrie has the latest on what police are calling an ‘intentional’ explosion at Harvard University on ‘The Big Weekend Show.’

'Intentional' explosion on Harvard Medical School campus probed by FBI; 2 people seen fleeing building: police

by · Fox News

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The FBI is assisting in a search for multiple masked suspects after an "intentional" explosion inside a building on Harvard University's Longwood Medical School campus early Saturday.

Harvard officials told Fox News Digital that, just after 2:45 a.m., a Harvard University Police Department (HUPD) officer was dispatched to the Goldenson building at 220 Longwood Avenue in Boston for a fire alarm activation.

When the officer arrived, two people fled the building, officials said.

Harvard University Police Department released photos of the two suspects wearing masks and head coverings. (HUPD)

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The officer tried to stop the pair before proceeding to the fourth floor, where the alarm was triggered, finding an explosion had occurred.

HUPD later released photos from surveillance footage of two people wearing masks and head coverings, seeking the public's help in identifying them.

The Boston Fire Department Arson Unit responded and made an initial assessment that the explosion appeared to be intentional, officials said, and they believe a single device to be involved.

The Boston Police Department conducted a sweep of the building to check for any additional devices, and none were found.

Two people were seen running from the building after the explosion, according to Harvard University officials. (Getty Images)

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No injuries were reported in the explosion.

"The Harvard University Police Department is actively investigating this incident in coordination with local, state and federal law enforcement partners," a university spokesperson told Fox News Digital.

FBI Boston confirmed to Fox News Digital it is at the campus assisting HUPD but referred any additional inquiries to university police.

Officials have not yet released the cause of the explosion. (Spencer Jones/GHI/UCG/Universal Images Group via Getty Images)

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Anyone with information about the incident should contact the Harvard University Police Department’s Detective Bureau at 617-495-1796.

HUPD did not immediately respond to additional inquiries from Fox News Digital.

This is a developing story. Please check back for updates.

Alexandra Koch is a Fox News Digital journalist who covers breaking news, with a focus on high-impact events that shape national conversation.

She has covered major national crises, including the L.A. wildfires, Potomac and Hudson River aviation disasters, Boulder terror attack, and Texas Hill Country floods.