Aldean was on stage when Stephen Paddock opened fire on concertgoers, killing 58 people and injuring over 500.
The conspiracy theorist refuses to accept Paddock carried out the shooting alone.
Stephen Paddock killed 58 people in the city before turning a gun on himself.
The owner of Wynn Resorts said his staff were stunned by what had happened.
Police are left with more questions than answers.
Researchers have studied criminal behavior and genetics for more than a century, and the findings are sometimes controversial.
Despite doubts from authorities, ISIS is insisting that Stephen Paddock was acting as a "soldier of the caliphate" when he murdered 58 people in Las Vegas.
Hundreds of thousands of people flock to Lollapalooza each year, including the elder daughter of former President Obama in August.
Danley was cleared of any involvement in the shooting but the whereabouts of the woman identified as Stephen Paddock's female associate remains unclear.
Stephen Paddock’s massive arsenal raises questions about gun regulation and hotel security.
"He never gave any indication or reason to believe he was unstable or unfit at any time," one store owner said in a statement.
Joe Lombardo said there was nothing to alert authorities to shooter Stephen Paddock.
Patrick Benjamin Paddock, also known as Benjamin Hoskins Paddock, was wanted for bank robberies, according to newspaper accounts.
The gunman, Stephen Paddock, had at least 19 rifles and handguns and fired hundreds of rounds of ammunition from his hotel room at the Mandalay Bay hotel.