An investigator works in the room at the Mandalay Bay Resort and Casino where a gunman opened fire from on a music festival on Oct. 3, 2017.
An investigator works in the room at the Mandalay Bay Resort and Casino where a gunman opened fire from on a music festival on Oct. 3, 2017. Marcio Jose Sanchez AP
An investigator works in the room at the Mandalay Bay Resort and Casino where a gunman opened fire from on a music festival on Oct. 3, 2017. Marcio Jose Sanchez AP