Police: 59 killed, 527 hurt in Las Vegas Strip massacre

Broken windows at the 32nd floor of Mandalay Bay Resort and Casino after a gunman, Stephen Paddock, opened fire on the Route 91 Harvest country music festival.

(CNN) - A "crazed lunatic" turned an outdoor concert into a bloodbath, killing 59 people in what is now the deadliest mass shooting in modern US history.

Thousands of country music fans ran for cover Sunday night as a gunman fired hundreds of bullets at them from a hotel on the Las Vegas Strip, officials said.

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At least 527 people were hurt in the gunfire and ensuing stampede at the Jason Aldean concert, police said.

The gunman, identified as 64-year-old Stephen Paddock, unleashed a hail of bullets from the 32nd floor of the nearby Mandalay Bay Resort and Casino, Las Vegas Metropolitan Police Sheriff Joseph Lombardo said Monday.

But why the massacre happened remains a mystery.

"I can't get into the mind of a psychopath," the sheriff said. Las Vegas Mayor Carolyn Goodman described the gunman as "a crazed lunatic full of hate."