Why is new video from the Oct. 2017 Las Vegas massacre just coming out now?

That's the question Tucker Carlson asked Thursday night following the release of new footage from the October 1 mass shooting, the worst in American history, which left 59 dead and more than 800 injured at a country music festival. 

One body camera video showed two police officers and three hotel security guards maintaining their positions in a 31st floor hallway at the Mandalay Bay hotel – as gunman Stephen Paddock opened fire just one floor above them.

Other videos show officers climbing the stairwell toward the 32nd floor, where authorities say gunman Paddock fired hundreds of rounds out of the windows of a suite and then killed himself before police reached him.

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Catherine Lombardo, an attorney for victims of the massacre, said the court has ordered the Las Vegas Metropolitan Police Department to release all video footage, and they are doing so "piece by piece."

Police and the FBI have declined to comment on the releases now amounting to eight batches since May 2. They total nearly 1,200 audio files, 70 video files and hundreds of written records and witness accounts.

She said the body camera footage from the 31st floor hallway shows a specific officer waiting there for minutes, which contradicts what a Mandalay Bay security manager told the FBI.

"This Mandalay Bay security manager told the FBI on nine separate occasions in his interviews that he was certain he was with this Officer Hendricks on the 32nd floor," Lombardo said.

"We already knew that this Officer Hendricks was on the 31st floor, but it wasn't until yesterday when all of that video was released that we finally got confirmation that something is wrong, something's amiss," she continued. "This whole thing, it's only the tip of the iceberg. We've only scratched the surface."

Carlson noted that this comes just months after the deadly shooting at Marjory Stoneman Douglas High School in Parkland, Florida, after which a sheriff's deputy was strongly criticized for waiting outside the building during the shooting.

"I'm very sympathetic to cops. I think they take a lot of crap. But I think we deserve an explanation for why this keeps happening," Carlson said.

Watch the "Tucker Carlson Tonight" segment above.

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