People scramble for shelter at the Route 91 Harvest country music festival after apparent gun fire was heard on October 1, 2017 in Las Vegas, Nevada. Getty

A new timeline of the Las Vegas attack, which was released in video form by the New York Times Saturday, claimed gunman Stephen Paddock shot Mandalay Bay security guard Jesus Campos one minute after the attack. Previously, police said Jesus was shot 6 minutes before Paddock fired rounds.

New York Times reporters Malachy Browne, Drew Jordan, Nicole Fineman and Chris Cirillo, looked at 30 videos from the night of the attack. They lined up the sound of gunfire and time stamps to create a minute-by-minute report.

"The amateur released footage of that night is horrifying," the reporters said in the video. "But by forensically analyzing these clips, we are able to draw perhaps the most complete picture to date of what happened."

The timeline of the attack changed several times, even though there were numerous videos of the shooting.

Campos was shot before Paddock wrecked havoc on the Route 91 Festival, Las Vegas Sheriff Joseph Lombardo said a week after the October 1 shooting. "Mr. Campos was encountered by the suspect prior to his shooting to the outside world," Lombardo said.

However, Lombardo changed the timeline Friday.

According to a CNN report the same day, Campos was near Paddock's suite at 9:59 p.m., but was not shot. Instead, the security guard was shot 6 minutes later, around the time the attacks on the country music festival began.

Lombardo referred to Paddock's attacks as a "dynamic event" as new facts emerge.

"I still stand by the time of 9:59," Lombardo said Friday. "It wasn't inaccurate when I provided it to you. The circumstances associated with it is inaccurate."

A motive for the attacks has not been discovered.

Results from Paddock's autopsy resulted in no "abnormalities," however, Lombardo said Paddock's brain will be sent to another location for "microscopic evaluation," CNN reported.

The Las Vegas attack claimed 58 lives. The numbers of those wounded rose to 546, and 45 remained hospitalized and in critical condition.

Concertgoers scramble for cover after Stephen Paddock released over 900 rounds of ammunition on the Route 91 Festival crowd October 1. Getty