BOSTON (AP) — An early morning explosion at Harvard Medical School is under investigation after authorities determined it was intentional, yet fortunately, there were no reported injuries. A police officer from the university responded to a fire alarm and witnessed two unidentified individuals fleeing the Goldenson Building. The Boston Fire Department confirmed that the explosion was not an accident, and following a thorough search, no additional explosives were found. The police have released grainy photographs of the suspects, who were seen wearing face coverings and sweatshirts, as part of their ongoing investigation into the incident.