Getty Images/Drew Angerer
A makeshift memorial for the victims of Sunday night's mass shooting stands at an intersection of the north end of the Las Vegas Strip, October 3, 2017 in Las Vegas, Nevada.
The shooting left 59 people dead and nearly 530 injured after a gunman opened fire from his Mandalay Bay hotel room on a crowd of people below attending a country music festival.
The attack took place just 14 months after a shooting at Pulse nightclub in Orlando, Florida, which at the time became a grim new benchmark for American mass shootings.
Here are the 10 deadliest mass shootings in modern US history: