The Mandalay Bay resort and casino is disputing the timeline of the mass shooting as reported by the sheriff’s office in Las Vegas, according to a statement from MGM.

The sheriff’s office is alleging that six minutes went by between the shooting of a hotel security guard and the beginning of the mass shooting by the perpetrator from a hotel window.

National security expert Juliette Kayyem joined BPR to explain the dispute about the order of events.

“I now think this MGM pushback is [because] either someone’s not telling the truth, or we’re still figuring it out, or they’re very, very worried about their liability,” she said. “Six minutes is a long time in public safety time.”

Kayyem explained that she has sympathy for the narrative changing, sometimes many years after the event, but she said she does not have sympathy for MGM’s handling of the incident.

“What is going on at Mandalay Bay? These are sophisticated security apparatus hotels,” she said. “They’ve got everything going on. Someone is shot in a hallway. Not just someone, a security guard, and you have six minutes [go by]. What is happening?”

Kayyem explained that Mandalay Bay was dealing with a confined area and “hundreds of security guards.” She predicted future spats between the sheriff’s office and the hotel, and she reiterated that the hotel is trying to avoid liability.

“We are now seeing the sort of corporate defense stepping in,” said Kayyem.

Juliette Kayyem is a CNN and BPR contributor, host of the SCIF podcast and CEO of ZEMCAR. To hear her interview in its entirety, click on the audio player above.