Explosion at Harvard Medical School Appears to Have Been Intentional, Authorities Say

A combination photo shows two persons of interest in an explosion at the Harvard Medical School in Boston, on Nov. 1, 2025. Harvard University Police Department via AP

BOSTON—There was an explosion early Saturday at Harvard Medical School that appears to have been intentional, but no one was injured, authorities said.

A university police officer who responded to a fire alarm tried to stop two unidentified people who ran from the Goldenson Building before going to where the alert was triggered, university police said in a statement.