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An explosion struck a Harvard Medical School building on Saturday, Nov. 1 — and arson investigators said the incident "appeared to be intentional"

The Harvard University Police Department was first called to the university's Goldenson Building at around 2:48 a.m. local time on Nov. 1 after a fire alarm went off

Police officers said they saw two people fleeing the building, and they found evidence of an explosion on the fourth floor

An explosion struck a Harvard Medical School building — and arson investigators said the incident appeared to be intentional.

According to reports from NBC Boston , CNN and the Harvard Crimson , the Harvard University Police Department (HUPD) was first called to the university's Goldenson Building — a medical school building located on

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