I don't really know. The security guard alerted the police when he saw me taking photos. They must've incorrectly assumed I was doing it for some kind of robbery, they checked my camera. It's sad the assumption anyone with a camera is doing it because they are planning to rob a place/plant a bomb.
I wasn't doing anything wrong, I had an answer for all their questions, so it's not my problem.
"C20 LET bang"