Staff member Leroy Patton-Goldsbury said “no one was freaking out” after they shut the doors.
“It was kind of a weird feeling, I guess, to be told to stay inside, but, you know, obviously police had it under control and were dealing with it.
“People were pretty level-headed about it and just staying in good spirits.”
As of 7.10PM the cordon had been lifted.
Police could not comment further.