People take cover at the Route 91 Harvest country music festival after apparent gun fire was heard. Reuters Photo
Two senior US officials said on Monday that there was no evidence that the shooter who killed at least 50 people in Las Vegas was tied to any international militant group.
Islamic State issued a statement through its news agency Amaq claiming responsibility for the shooting, saying that the attacker had converted to Islam a few months ago.
But one of the two US officials discounted Islamic State's claim of responsibility and said there was reason to believe that the shooter, whom police identified as 64-year-old Stephen Paddock, had a history of psychological problems.