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More details of the FBI's probe into the Las Vegas shooting revealed

Flowers are placed as the FBI inspects the perimeters of Mandalay Bay Hotel after the attack in Las Vegas.
Flowers are placed as the FBI inspects the perimeters of Mandalay Bay Hotel after the attack in Las Vegas. Photo: Bilgin Sasmaz / Anadolu Agency / Getty Images

Stephen Paddock, the man who killed 58 people at a Las Vegas country concert and wounded hundreds more, took "many methodical steps to avoid detection," according to the FBI as reported by the New York Times.

Why it matters: His motive is still unclear, but the unsealing of FBI search warrants on Friday reveal more details of their investigation including how Paddock got his weapons and the FBI's focus on his girlfriend.