Fifty-eight victims were killed, making Las Vegas the deadliest shooting in modern US history. "As you saw earlier this week the city conducts extensive public safety planning and training around major events, in close coordination with our law enforcement partners, to ensure public safety".
Both rooms had a checkout date of August 6, corresponding with the final day of the music festival that drew tens of thousands of concertgoers to Grant Park alongside Lake Michigan. Paddock then booked a second room for an August 3rd Arrival.
The gunman, who slaughtered 58 people and injured 489, had allegedly booked two hotelrooms overlooking the festival area where 400,000 people gathered over four days in the beginning of August. It's been attended by celebrities and even Malia Obama.
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The Chicago Police Department says it is aware of the reports of a Stephen Paddock booking a room at the hotel, and the department has been in communication with federal agencies.
Police said Paddock, 64, had stockpiled weapons in his Mandalay Bay hotel room.
Investigators say they now do not have information which links Paddock to more assailants.
Boston Police acknowledged the reports Thursday, but would not comment on the investigation other than to say state officials have been in contact with authorities in Las Vegas. "There is now no known threat to the Metro Boston Homeland Security Region related to this incident".