September 2, 2008 - In Skagit County, Washington, 28-year-old Isaac Zamora, who has a long criminal history and is out on parole, allegedly kills five civilians and a police officer during a two hour rampage. Zamora is sentenced in November 2008 to a life term at the state mental hospital.
July 27, 2008 - In Knoxville, Tennessee, 58-year-old Jim Adkisson shoots and kills two people during a children's play at the Tennessee Valley Unitarian Universalist Church. Church members subdue him until police arrive.
February 14, 2008 - Northern Illinois University, Dekalb, Illinois. 27-year-old Steven Kazmierczak shoots and kills five people in a lecture hall before taking his own life.
February 7, 2008 - In Kirkwood, Missouri, Charles Lee Thornton shoots and kills five people at a city council meeting before being shot dead by police.
2007 December 9, 2007 - In Colorado, 24-year-old Matthew Murray shoots and kills four people in two separate attacks. The first attack, in Arvada, happens late at night, after a Christmas banquet at the Youth with a Mission religious complex. Two people are killed. Hours later, at New Life Church in Colorado Springs, Murray kills two teen girls in a parking lot. A security guard shoots Murray several times, but police rule his death a suicide.
December 5, 2007 - In Omaha, Nebraska, 19-year-old Robert Hawkins goes to an area mall and kills eight shoppers before killing himself.
April 16, 2007 - Virginia Tech in Blacksburg, Virginia. A gunman, 23-year-old student Seung-Hui Cho, apparently acting alone goes on a shooting spree killing 32 people in two locations and wounds an undetermined number of others on campus. The shooter, Seung-Hui Cho then committed suicide.
February 12, 2007 - In Salt Lake City, Utah, 18 year old Sulejmen Talovic goes to a local mall and kills five people and injures four more. He is then killed by police.
2006 November 16, 2006 - In Detroit, Michigan, Contrelle Harbin, 26, goes on a shooting spree, wounding three people and killing two. In July 2007, Harbin is sentenced to life in prison.
May 21, 2006 - In Baton Rouge, Louisiana, 25-year-old Anthony Bell goes to a local church, shoots and kills four people, abducts his wife and later kills her. He is convicted of five counts of murder and sentenced to die in 2008.
March 25, 2006 - In Seattle, 28-year-old Kyle Huff, leaves a house party and returns with a shotgun and handgun. He kills six people and wounds two and then kills himself when confronted by police.
March 15, 2006 - In Pismo Beach, California, 60-year-old Lawrence Woods, believed to be a transient, opens fire on patrons at a Denny's Restaurant. He kills two men and injures two others and then kills himself.
February 2-5, 2006 - In New Bedford, Massachusetts, 18-year-old Jacob Robida attacks patrons of a gay bar with a hatchet and gun, injuring three men. On February 4, Robida shoots and kills a police officer during a traffic stop. During a standoff with police, Robida kills the passenger in his car and then shoots himself. Robida dies February 5th.
January 30-31, 2006 - In Goleta, California, Jennifer San Marco, a former employee at a 24-hour Postal Service sorting facility, opens fire, killing seven people before turning the gun on herself. San Marco's neighbor was found shot to death the next day.
2005 March 12, 2005 - In Brookfield, Wisconsin, 44-year-old Terry Ratzmann kills seven people during a church meeting with the Living Church of God at a Sheraton Hotel in Brookfield. He then kills himself.
March 11, 2005 - In Atlanta, Georgia, 33-year-old Brian Nichols, on trial for rape, shoots three (a judge, court reporter, and deputy) and wounds one (a deputy) while escaping from the Fulton County Courthouse. He kills another (a federal customs agent) while stealing a car. In December 2008, Nichols is sentenced to life in prison without parole, a day after the jury deadlocks on a death penalty sentence.
2004 December 8, 2004 - In Columbus, Ohio, 25-year-old Nathan Gale storms the stage at a rock concert and kills the band's guitarist and three bystanders. He was then killed by a police officer.
2003 June 10, 2002 - In Conception, Missouri, Lloyd Robert Jeffress, a 71-year-old retiree from Kearney, opens fire with an AK-47 assault rifle at Conception Abbey, killing two monks, and leaving two others seriously injured. Jeffress later kills himself.
March 12, 2002 - In Lynbrook, New York, Peter John Troy, 34, a former mental patient, opens fire with .22-caliber rifle during morning Mass at Our Lady of Peace Catholic Church, killing a priest on the altar and an elderly woman praying nearby. Troy is later sentenced to consecutive life terms despite a history of schizophrenia.
2002 October 28, 2002 - In Tucson, Arizona, 41-year-old nursing student Robert Flores Jr. kills three instructors at his college and then himself.
2001 October 3, 2001 - In Manchester, Tennessee, 29-year-old Damir Igric attacks the driver of a Greyhound bus, cutting his throat. Igric and five passengers are killed in the bus crash.
May 18, 2001 - In Hopkinsville, Kentucky, Fredrick Radford, 35, opens fire at a Friday night church revival at Greater Oak Missionary Baptist Church, killing his estranged wife, Adrianne Radford, and another woman Mary Ann Turner, 47, before fleeing with his young son. Court records show Radford had allegedly threatened his wife as she sought a divorce.
April 11, 2001 - In Chula Vista, California, 68-year-old Eugene Molter kills three people at Congregational Tower, an apartment complex for senior citizens. He then takes his own life.
January 10, 2001 - In Nevada City, California, 40-year-old Scott Harlan Thorpe kills three people at a mental health clinic and then a fourth at a restaurant nearby. He is found not guilty by reason of insanity and sent to a mental institution.
2000 April 28, 2000 - In suburban Pittsburgh, Pennsylvania, 34-year-old lawyer Richard Baumhammers kills five people in racially motivated attacks. In 2001, Baumhammers is convicted and sentenced to death.