[adzii_nufc]

Was an event but was being hosted in a pizza restaurant rather than a large scale gig so security isn't that questionable here. Was a pistol so again easily concealed.

It was actually being streamed live. A laser sight briefly appears on a competitors chest before shots ring out. Presumably the two people on camera are those dead and the gunman then shot off his capacity before shooting himself.

Allegedly but now seemingly true since they've identified him, he was a fellow competitor that lost... A video game. His identity and that story were already leaking via people at the event before police confirmed his name.