BOSTON — Federal investigators have made a pair of arrests in connection with an explosion at Harvard University’s Longwood medical campus over the weekend.
United States Attorney for Massachusetts Leah B. Foley and Ted E. Docks, head of the FBI Boston division, are slated to detail the arrests at a 1 p.m. news conference at the Moakley Federal Courthouse in Boston.
BREAKING 🚨US Attorney to hold press conference TODAY @ 1pm to announce arrests in connection w/ explosion on Harvard University’s medical campus.
— U.S. Attorney Massachusetts (@DMAnews1) November 4, 2025
Livestream: https://t.co/VtFAYvlrAu pic.twitter.com/5tYHDBUkem
FBI Boston confirmed that its Joint Terrorism Task Force helped Harvard University Police arrest two Massachusetts men. Their names haven’t been released.
🚨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 @dmanews1 at… pic.twitter.com/nnEIi6GsSD
— FBI Boston (@FBIBoston) November 4, 2025
The blast on the fourth-floor Goldenson Building at 220 Longwood Avenue occurred around 2:48 a.m. on Saturday. The building houses labs and offices associated with the school’s neurobiology department.
A police officer said they saw two people running from the building and tried to stop them, but then the officer ran into the building, going to a floor where a fire alarm had been set off.
The Harvard University Police Department released surveillance images that showed two masked individuals fleeing the area.
No explosive devices were found inside the building. Police also confirmed that there was no structural damage.
No one was injured during the incident.
Boston 25 News will air the news conference live on-air and stream it online.
This is a developing story. Check back for updates as more information becomes available.
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