Deadliest mass shooting in U.S. history RECENT MASS SHOOTINGS 2017, Las Vegas, Nevada: Lone gunman fires automatic weapon into crowds attending country music festival from 32nd floor of Mandalay Bay Resort. Local suspect, 64-year-old Stephen Paddock, killed by police At least 50 dead, over 200 injured 2016, Orlando, Florida: Omar Mateen – linked to so-called Islamic State – attacks gay nightclub Pulse 49 dead, 53 injured 2015, San Bernadino, California: Shooting and attempted bombing by Syed Rizwan Farook and Tashfeen Malik - married couple believed to have been radicalised online 14 dead, 21 injured 2012, Sandy Hook Elementary School, Connecticut: 20 year-old Adam Lanza shoots and kills 20 children, six staff members, and his mother 27 dead, 2 injured 2012, Aurora, Colorado: Heavily armed gunman James Holmes attacks moviegoers at midnight screening of Batman movie, The Dark Knight Rises 12 dead, 70 injured 2009, Fort Hood, Texas: U.S. Army Major Nidal Hasan opens fire at military base killing 13 mainly miltary personnel and wounding more than 30 others 13 dead, 30 injured 2009, Binghampton, New York: Former student Jiverly Antares Wong kills teacher and students at American Civic Association immigration centre 13 dead, 4 injured 2007, Virginia Tech, Blacksburg, Virginia: Student Seung-Hui Cho opens fire on university campus killing 32 people before taking his own life 32 dead, 17 injured 1999, Columbine High School, Colorado: Students Eric Harris and Dylan Klebold conduct complex attack on school, killing 12 students and one teacher, and injuring 24 others 12 dead, 24 injured Source: Associated Press Picture: Getty Images © GRAPHIC NEWS