A man fired shots at someone inside the Harvard Square MBTA station just after 2 p.m. Sunday, injuring no one but causing a flurry of concern in the usually peaceful neighborhood.

Police responded to reports of gunshots at the Harvard Square train station shortly after 2 p.m. on Sunday afternoon, according to a series of alerts from the Harvard University Police Department. A shelter-in-place order to Harvard affiliates was lifted at 3:19 p.

A report of shots fired at the Harvard Square MBTA station Sunday afternoon prompted a shelter in place as police searched for the suspect, according to a Harvard Alert sent by the university.