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She reportedly deleted social media profiles in the hours after the attack.
In the warrants, agents pushed for access to Danley's email account, saying that "[it could] lead investigators to determine the full scope of Stephen Paddock's plan and Marilou Danley's possible involvement."
A number of the devices that Paddock used in the shooting were ordered online, including a holographic weapon sight, authorities said.
Authorities have been able to gain access to Paddock's email accounts and say that he emailed between two accounts referring to items that he used in the attack, including the bump stock that he attached to his weapon. Although they're not sure, investigators said there's a possibility that somebody else was handling one of the email accounts, and they believe that identifying the person could help pull back the veil that surrounds Paddock's motives.