 Right. It's still less than 24 hours since the shooting, so this is still very much a developing situation. The first step was to confirm the gunman's identity. Investigators are now going to be looking at whether he acted alone or was working in tandem with others. And, of course, they will be looking for a potential motive. At a press conference around midnight last night, FBI Special Agent Kevin Rojek said investigators had not identified a motive yet.