A report of shots fired at the University of Massachusetts Boston on Thursday afternoon prompted a heavy police response and campus lockdown, authorities reported.

The incident was reported around 3:45 p.m. near 240 Morrissey Boulevard in Dorchester, close to a residence hall in the East Building, according to WCVB in Boston.

UMass Boston issued alerts calling it a “public safety threat” and urged people to avoid the area and the Campus Center. It was not immediately clear if anyone was injured.

This is a breaking news article. Updates to follow.