NEW YORK (CBSNewYork/AP) — More than 50 people were killed and at least 500 injured when a man opened fire at concertgoers on the Las Vegas Strip Sunday night.

The attack is now being called the deadliest mass shooting in United States history.

Photos: Las Vegas Mass Shooting

The gunman has been identified as Stephen Paddock. Who is Paddock?

  • He is 64 years old from Mesquite, Nevada.
  • Paddock was found dead inside his hotel room on the 32nd floor of the Mandalay Bay Hotel and Casino — where Paddock opened fire on victims.
  • Police believe he acted alone and took his own life after the shootings.
  • Paddock brought more than 10 rifles to his room, police said.
  • Paddock has no known ties to terror groups.
  • He checked into the hotel on September 28.
  • Police have executed a search warrant at his home in a retirement community in Mesquite – about 90 minutes away from Vegas.
  • Police are questioning his girlfriend Marilou Danley who was apparently not involved in the attack.
  • Paddock had been gambling the past few days using his wife’s ID card.
  • Paddock had no run-ins with local law enforcement.
  • His brother claims he was a multi-millionaire who made much of his money investing in real estate.
  • Paddock was also an accountant for many years, his brother Eric said.

“If he had opened fire on my kids I couldn’t be more dumbfounded,” Paddock’s brother, Eric, said following the shooting.

(© Copyright 2017 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)

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