However CNN is now reporting that Danley, 62, has been cleared of any wrongdoing.
'Detectives have made contact with her and do not believe she is involved with the shooting on the strip,' CNN reported the Police Department as saying. “She is no longer being sought out as a person of interest.'
Danley is believed to be the partner of gunman Stephen Paddock, 64, who has been identified as the gunman who opened fire on country music festivalgoers, wounding 515 people.
Las Vegas police located Danley shortly after releasing her name to media but by early Monday local time, Las Vegas police cleared her of any involvement.
It is understood that the hotel room on the 32nd floor of the Mandalay Bay Hotel was booked in Danley's name.
Danley’s now deleted Facebook page identified her as a 'proud mom and grandma who lives life to the fullest,' according to the Express. She is also believed to have been a 'high-limit hostess' at Club Paradise Casino in Atlantis Casino in Reno.
Multiple news outlets in Australia reported on Monday night that Danley was a resident of the Gold Coast until she moved to the United States about 20 years ago.
'We are aware of media reports referring to Marilou Danley as an Australian woman in connection with the shooting incident in Las Vegas,' said a statement from DFAT.
'We cannot comment further on these reports.'