Okay, my first thought was that even at a fancy dress event, if you get a call that there is a gun, you have to expect there to be on, as a police officer. But this really makes it kind of strange:
"Security verified that a plastic toy accessory was displayed to, and passed by security and this information was given to police on arrival," she said.
"Staff and security have vehemently stated that at no time did they make a call to police for assistance, or indeed, saw the need to.
"Security had no concerns prior to the incident, and advised police on attendance that they were more than happy to deal with any issues."
Truly weird news. It's a good thing the man's injuries aren't life-threatening, at least.