"There was a reservation under the name Stephen Paddock", Blackstone spokeswoman Emmy Carragher told Agence France-Presse. The hotel is located about one block away from the Grant Park concert venue.
According to the report, Paddock was aggressive and said that he need a room with a view because he would be celebrating his anniversary with his wife, and the two met at Lollapalooza.
Investigators are probing the Las Vegas gunman's interest in other music festivals in the months before he killed 58 people and injured almost 500 at an outdoor country concert.
Las Vegas gunman Stephen Paddock booked rooms over other music festivals in the months before opening fire on a country music festival, authorities said, while thousands came out to mourn a police officer who was one of the 58 people he killed.
Paddock did not check in for his reservation, she said.
"One of the things that we're doing is we're putting a significantly larger number of undercover officers", said Anthony Riccio, chief of Chicago police's organized crime bureau.
He requested specific suites at the Ogden and another unidentified hotel, but moved on when he discovered they were booked, an inside source told CBS on Wednesday.
The Las Vegas gunman who carried out the deadliest mass shooting in recent US history also had scouted possible locations in Chicago and Boston, US media reported on Thursday.
Shortly after the Life is handsome festival ended, Paddock checked into a 32nd-story suite at the Mandalay Bay Resort and Casino. They observed the suspect down on the ground and also saw a second door that could not be accessed from their position.
"He never said anything to me or took any action that I was aware of that I understood in any way to be a warning that something frightful like this was going to happen", she said in a statement read by her lawyer.
Paddock sent Danley on a trip to her native Philippines before the attack, and she was unaware of his plans and devastated when she learned of the carnage while overseas, she said in a statement.
Tuesday night: Danley arrives back in the USA from the Philippines.
A federal official said authorities are looking into the possibility Paddock planned additional attacks, including a auto bombing.
'Stephen Paddock is a man who spent decades acquiring weapons and ammo and lived a secret life, much of which will never be fully understood, ' Lombardo said.
Lombardo declined to reveal why he believed that Paddock had an exit planned, but said he was confident in the claim - and said that his scheme was so elaborate that he would have to be a "super hero" to pull it off alone.
El Capitan climbers: Yosemite rock fall is biggest in memory
The first rockfall on weds, unfortunately killed one climber and injured another who were on the ground about to start climbing. Another massive rockfall near El Capitan has closed down Northside Drive on the valley floor in Yosemite National Park .
Gareth Bale doubtful for Real Madrid and Wales with calf injury
The Madrid boss felt the Spain attacking midfielder was wise to praise Ronaldo as an example to follow as he continues to develop. So now with Espanyol coming to the Santiago Bernabeu, Madrid will be hoping that their fortunes will change for the better.
Street Fighter V: Arcade Edition Revealed
Other than that, the title gets a completely redesigned user interface and a new gallery of illustrations. There will also be a new mode that rewards exclusive costumes through the completion of timed challenges.