Another hotel maintenance worker says he called in the shooter before he fired on the concert goers.
https://www.cbsnews.com/news/worker-warned-hotel-before-las-vegas-shooter-opened-fire-on-crowd/
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It was unclear if the hotel relayed the information to Las Vegas police, who did not respond to questions from The Associated Press about whether hotel security or anyone else in the hotel called 911 to report the gunfire.
Joseph Giacalone, a professor at John Jay College of Criminal Justice and a retired New York City police sergeant, said the new timeline "changes everything."
"There absolutely was an opportunity in that timeframe that some of this could've been mitigated," he said."