Things are back to normal on the campus of American University in Northwest Washington after a lockdown last night caused by a misunderstanding.
The university went on lockdown last night when someone called D.C. police after seeing a man wearing a gun holster on the university's shuttle bus. The call caused the university to go into lockdown, with students confined to buildings for over an hour as police searched the campus.
The all-clear was given after police officials clarified that the man was actually an off-duty D.C. police officer. He graduated from the university in 2012 and was visiting his girlfriend, who's still a student.
University officials say while everyone is safe and no crime was committed, the system set up to respond to potential threats worked.
Disclosure: WAMU 88.5 is licensed to American University.