(Reuters) - A 19-year-old man who had been expelled from his Florida high school was charged on Thursday with 17 counts of murder, a day after authorities said he opened fire at the school, unleashing one of the deadliest school shootings in U.S. history.
Below are some of the bloodiest and most notable U.S. mass shootings in recent decades, ranked by death toll. This is not a complete list of all major U.S. mass shootings:
LAS VEGAS, Oct. 1, 2017 - A gunman opens fire on a country music festival from a 32nd-floor hotel suite, killing 58 people and wounding 564 others before taking his own life.
ORLANDO, June 12, 2016 - A gunman fatally shoots 49 people at Pulse, a gay nightclub, before he is shot dead by police.
VIRGINIA TECH, April 16, 2007 - A gunman slaughters 32 people and kills himself at Virginia Tech, a university in Blacksburg, Virginia.
SANDY HOOK, Dec. 14, 2012 - A man fatally shoots his mother, then kills 20 children and six adults before killing himself at Sandy Hook Elementary School in Newtown, Connecticut.
SUTHERLAND SPRINGS, Nov. 5, 2017 - A man thrown out of the U.S. Air Force for beating his wife and child fatally shoots 26 people at a rural Texas church where his in-laws worshipped before killing himself.
KILLEEN, Oct. 16, 1991 - A man rams his pickup truck through the plate glass door of a Luby's restaurant, then opens fire and kills 23 in the central Texas city.
SAN YSIDRO, July 18, 1984 - A man fatally shoots 21 people and injures 19 others at a McDonald's restaurant in a San Diego, California, suburb. He is killed by a police sniper.
AUSTIN, Aug. 1, 1966 - A sniper perched in a University of Texas clock tower unleashes 90 minutes of terror by killed 13 people and wounded more than 30 others in what is regarded as the first U.S. mass shooting in a public space. He is fatally shot by police.
SAN BERNARDINO, Dec. 2, 2015 - A husband and wife kill 14 people at a workplace holiday party in San Bernardino in Southern California before dying in a shootout with police.
COLUMBINE, April 20, 1999 - Two teenagers rampage through Columbine High School in Jefferson County, Colorado, fatally shooting 12 students and a teacher and wounding more than 20 others before killing themselves.
FORT HOOD, Nov. 5, 2009 - An army major and psychiatrist opens fire at Fort Hood, a U.S. Army base in Texas, killing 13 people. He is sentenced to death.
WASHINGTON, D.C., Sept. 16, 2013 - A former Navy reservist working as a government contractor kills 12 people at the Washington Navy Yard. He is shot dead by police.
COLORADO, July 20, 2012 - A masked gunman kills 12 people and wounds 70 others after he opens fire inside a midnight premiere of Batman film "The Dark Knight Rises" at a multiplex movie theatre in Aurora, Denver. He receives multiple life sentences.
WASHINGTON, D.C., October 2002 - Two men ambush 13 people, killing 10 of them, in sniper-style shootings that terrorise the Washington area for three weeks. One sniper was executed and the other was sentenced to life in prison.
CHARLESTON, June 17, 2015 - A white supremacist kills nine black churchgoers at a historic, predominantly black church in Charleston, South Carolina.
WISCONSIN, Aug. 5, 2012 - A white supremacist kills six worshippers in a Sikh temple in Oak Creek, Wisconsin. The gunman kills himself.
TUCSON, Jan. 8, 2011 - U.S. Representative Gabrielle Giffords is the target of an assassination attempt by a gunman in Tucson, Arizona. Six people are killed and 13 others, including Giffords, are wounded.
DALLAS, July 7, 2016 - A U.S. military veteran kills five police officers and wounds seven more in the deadliest attack on police. The suspect is killed by a police bomb.
(Compiled by Jon Herskovitz, Jeffrey Benkoe, Jonathan Oatis and Daniel Wallis; Editing by Tom Brown and Jeffrey Benkoe)