BOSTON (AP) — An explosion early Saturday at Harvard Medical School has been classified as intentional by local authorities, although there were no injuries reported. The incident took place at the Goldenson Building, and a university police officer who arrived in response to a fire alarm attempted to detain two individuals who fled the scene just before the alert. Following a thorough sweep of the area, the Boston Fire Department confirmed that no additional devices were found. As part of the investigation, police have released grainy images of the two unidentified suspects, who were seen wearing face coverings and hooded sweatshirts.