The Las Vegas Metropolitan Police Department sheriff said on Friday that Paddock's finances could have been a motive for the mass shooting.
Clark County Sheriff said there are a number of things they believe led to Stephen Paddock meticulously planning his attack, which was the largest mass shooting in recent U.S. history.
Hundreds of thousands of people flock to Lollapalooza each year, including the elder daughter of former President Obama in August.
Paddock and the employee talked in-depth about three-gun competitions, which test the ability to switch between a rifle, handgun and shotgun quickly all while keeping fire on targets and moving throughout an obstacle course.
One camera was found on a room service cart in the hallway.
Danley was cleared of any involvement in the shooting but the whereabouts of the woman identified as Stephen Paddock's female associate remains unclear.
Police have identified a single attacker in the incident in which more than 50 people were killed.