The hotel is located about one block away from the Grant Park concert venue.
The rooms with a view of the Lollapalooza music festival were allegedly booked by Paddock at the Blackstone Hotel from August 1 to 6, across the street from the festival. The official wasn't authorized to discuss the matter publicly and spoke to The Associated Press on condition of anonymity.
Weinreich said Paddock's girlfriend Marilou Danley once worked at the casino and initially got on Paddock's good side by leading him to a machine where someone had lost tens of thousands of dollars.
Investigators have not yet said whether he checked into this condo, or if he sought to book rooms in other hotels across the country near big concerts.
Staff at The Ogden have not been able to confirm that Paddock stayed at the hotel.
At a press conference, Federal Bureau of Investigation special agent Aaron Rouse said that they have yet to find a link to terrorism.
According to some reports, the shooter had a similar view over the event crowd to the one he had in Las Vegas.
The manager agreed, noting on Paddock's reservation that he should be placed in a room overlooking the park.
The celebrity blog told of Paddock not showing despite asking for rooms that overlooked Grant Park - where 400,000 concert goers including Malia Obama converged this summer.
Investigators have said the attack was meticulously planned.
Mr. Moulton said the ban has to be passed by law and not through a regulation from the Alcohol, Tobacco and Firearms Bureau because that agency works within the laws as they're written.
Lombardo said he didn't know what Paddock intended with the explosives and wouldn't elaborate on getaway plans.