DENVER (KDVR) — UPDATE (11:20 p.m.): Denver police officers have cleared the area of concern on campus and said there are no identified threats there at this time. Police continue to secure the campus and advise everyone to stay in place and not move around the premises.

UPDATE (10:11 p.m.): Denver police are clearing buildings and securing the campus by patrol, the department tweeted.

The Northwest Denver Campus of Regis University has been put on lockdown after a report of a man with a long gun was seen on the premises.

The university tweeted the threat just before 9:30 p.m. and said the Denver Police Department had been notified of three men seen heading east toward the Fieldhouse, one with a long gun. The tweet said it is possibly a shotgun.

Officials warned students to stay inside, lock doors and call 911 if they see anything suspicious.