Harvard Medical School rocked by intentional explosion, surveillance spots 2 suspects fleeing detonation

An explosion rocked a Harvard Medical School building early Saturday morning, while Boston police have now released surveillance footage of the two suspects.

The unknown device exploded on the fourth floor of the Goldenson building on the Harvard Longwood Campus’s main quad shortly before 3 a.m., The Harvard Crimson reported citing authorities.

Two individuals were witnessed running out of the building at the time of the detonation, the outlet said, citing the Harvard University Police Department. 

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An officer with the university failed in an attempt to stop them, before entering the building to check on the alarm, The Boston Globe reported.

The Boston Police Department released surveillance images of the suspects on Saturday, NBC Boston reported.

Images showed two individuals wearing masks over their faces and hooded sweatshirts.

The Boston Fire Department determined the explosion was intentional and conducted a sweep of the building which found no additional devices, according to the Crimson.

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No injuries were reported.

Sources familiar with the investigation told The Post the explosive device was not a bomb but declined to further detail the incident.

The Federal Bureau of Investigation is at the scene as part of the investigation, The Crimson reported.

The Boston Police Department and the FBI declined to comment. Meanwhile, Harvard University Police Department could not be reached for comment.