At UMass Boston on September 11, 2025, a large police response was triggered by an unconfirmed report of shots fired on campus, specifically around the Residence Hall East Building and other locations. The report came from a single 911 call, causing police officers, including those with assault-style rifles, to sweep the campus with guns drawn, clearing buildings and searching students as they evacuated. Students reported feeling scared and some fled with their hands up while officers secured the area. After a thorough investigation by university, Boston Police, Massachusetts State Police, and other emergency services, no evidence of any gunfire was found anywhere on campus. There were no injuries reported, and the incident was declared a false alarm or a non-credible threat. The university canceled classes and activities for the rest of the day out of caution but resumed normal operations the following day. Counseling services were offered to students affected by the incident. The investigation remained ongoing, and police asked for anyone with information to come forward. Overall, the incident was a scare caused by reports of shots fired that were not substantiated by any physical evidence on the UMass Boston campus.