The FBI believes it ... As far s a motive, Rouse indicated, “When we’re done, we’ll have as close to an answer on the why as you’re going to be able to come to without talking with (Paddock).” ...

Authorities are still searching for a motive in the attempted assassination ... The Homeland Security Department and the FBI issued a bulletin on Monday night, according to ABC News, warning ...

His motive remained unclear. Crooks wasn't on the FBI's radar, and he was believed to have acted alone. Investigators combed ... took up positions on stage to search for the threat.