The Chicago Police Department said in a statement that it is investigating the report.
Stephen Paddock, the man behind the mass shooting that left more than 50 people dead and almost 500 hurt in Las Vegas, may have planned event attacks in Chicago and Boston, according to media reports Thursday.
Danley said that Paddock "never said anything to me, or took any action I was aware of, that I ever understood to be a warning that something disgusting like this was going to happen", according to the Los Angeles Times.
Both rooms had checkout dates of August 6, right after the festival ended.
The official said that law enforcement found no evidence that Paddock ever came to Chicago during the weekend of Lollapalooza - a music festival that attracts hundreds of thousands of people. The retired accountant rented multiple apartments at the Ogden, a luxury tower with a view of the Life is handsome alternative music festival.
Bookings have been uncovered in Ogden a luxury condo tower that overlooks the Life is handsome festival in Las Vegas from September 22 to 24.
On 1 October, he opened fire on the country music concert taking place below.
Police are still trying to work out what drove Paddock to snap and kill so many innocent people.
Police recovered almost 50 firearms from three locations they searched, almost half of them from the hotel suite.
Authorities previously disclosed Paddock had 1,600 rounds of ammunition in his auto, along with fertilizer that can be used to make explosives and 50 pounds of Tannerite, a substance used in explosive rifle targets. Many of those answers still remain a mystery. Lombardo said at a news conference.
"You can't let terror deter you from enjoying yourself and going about a normal life", Tina Manley said.
Federal Bureau of Investigation agents questioned Paddock's girlfriend, Marilou Danley, on Wednesday to try to gain some insight into his state of mind.
The police had earlier said that they would question Danley on her visit to the Philippines as they wondered if Paddock had urged her to leave the USA before he went on the rampage. While there, he wired her $100,000 and told her to buy a home for her and her family.
The official, who was not authorized to comment publicly, said Thursday that information referencing other locations is being drawn from investigators' continuing analysis of Paddock's communications devices.