The massacre on the Las Vegas strip, in which more than 50 people were killed, is now the worst mass shooting in U.S. history.
A list of the deadliest mass shootings in the United States since 1949:
1. Las Vegas strip - Las Vegas, Nev. - Oct. 2, 2017 - More than 50 killed, more than 200 injured
2. Pulse nightclub - Orlando, Fla. June 12, 2016 - 49 killed, 58 injured
3. Virginia Tech - Blacksburg, Va. - April 16, 2007 - 32 killed, 23 injured
4. Sandy Hook Elementary School - Newtown, Conn. - December 14, 2012 - 26 killed at the school, plus 1 other off site, 2 injured
Photos: Chaos in Las Vegas as shots rain on concert crowd
5. Luby's Cafeteria - Killeen, Texas - October 16, 1991 - 23 dead, 27 injured
6. McDonald's restaurant - San Ysidro, Calif. - July 18, 1984 - 21 dead, 19 injured
7. University of Texas tower - Austin, Texas - August 1, 1966 - 13 dead, 31 injured, plus two others off site, one victim died a week after shooting
8. Columbine High School - Littleton, Colorado - April 20, 1999 - 13 dead, 24 injured
9. Post Office - Edmond, Oklahoma - August 20, 1986 - 14 dead, 6 injured
10. Inland Regional Center - San Bernadino, California - December 2, 2015 - 14 dead, 22 injured
Totals do not include the shooter and were totals of those killed at the scene.
What is a mass shooting?
While the federal government doesn't define a mass shooting, it is commonly defined as a case where four or more people are killed or injured.
The FBI defines a mass killing as an incident resulting in the killing of three or more in a public space.