UPDATE (12pm): Investigation of the bomb threat at the Prince William campus has concluded. All buildings have been deemed safe and reopened.

Vehicles are prohibited from entering Mason’s Prince William Campus after a bomb threat was reported by the university this morning. Residents in Beacon Hall are told to remain in place. The campus is expected to reopen by 12 p.m.

This is the second bomb threat in two weeks. Another threat was reported in the early hours of March 6 in the Art & Design Building on the Fairfax campus.

Mason has posted a full update on its website at 9:22 a.m.:

University Police and local law enforcement are continuing to investigate the bomb threat at the Prince William Campus. Residential students in Beacon Hall should remain in place. Governor’s School Students may be released to their parents or will be returned to their home school as transportation is made available.

Vehicles are not being allowed on campus as this time; please do not attempt to travel to the Prince William Campus. Shuttle service between the Fairfax Campus and Prince William Campus has been suspended. Employees, students, and visitors already on campus may take shelter in the Freedom Aquatic and Fitness Center until this situation is resolved. Prince William.Campus employees are advised to telework or work from another location at an alternate campus. The campus is anticipated to be reopened by 12:00 p.m. this afternoon. Please check Mason Alerts and www.gmu.edu for additional information and updates.