June 14, 2017 San Francisco, California
A UPS driver kills himself and then three colleagues in their San Francisco bundle facility employing a stolen pistol, according to authorities. Authorities said Jimmy Lam started shooting at an employee meeting and coworkers that were targeted.
June 5, 2017 Orlando, Florida
A gunman fatally shoots five prior co-workers in an awning business near Orlando, Fla., then kills himself shortly before authorities arrive, police say. John Robert Neumann Jr., 45, was fired from his job there almost two weeks before.
September 16, 2013 Washington, D.C.
12 killed, 3 injured
Aaron Alexis, a Navy contractor and former Navy enlisted man, shoots and kills 12 people and engages police in a firefight throughout the sprawling Washington Navy Yard. Authorities shoot and killed him.
Authorities later show that he had an extensive Navy disciplinary document that included several absences from duty, instances of insubordination and disorderly conduct and several failed inspections. He was still able purchase a rifle and to have a security clearance.
October 21, 2012 Brookfield, Wisconsin
3 killed, 4 injured
Radcliffe Haughton, a 45-year-old former Marine, walks into the Azana Salon and Spa where his estranged wife works and shoots and kills her and two other women, wounding four others. Witnesses say Haughton’s wife, Zina, calmly tried to protect coworkers and customers before she was killed. She had recently sought a restraining order saying her husband had threatened to throw acid in her face and set her on fire with gasoline. Haughton was found dead inside the salon of a self-inflicted gunshot.
September 28, 2012 Minneapolis, Minnesota
6 killed, 2 injured
Andrew Engeldinger, 36, breaks into a sign company’s offices and opens fire, killing the owner and five others before turning the gun on himself. Engeldinger had been fired from Accent Signage Systems, a small company that specializes in making interior signs that comply with the Americans With Disabilities Act, including signs in Braille for the blind.
October. 12, 2011 Seal Beach, California
8 killed, 1 injured
Scott Dekraai, 41, apparently enraged over a custody dispute, allegedly walks into a crowded Seal Beach hair salon where his former wife works and opens fire. Eight people are killed, including a man sitting in a truck outside the salon. Another person is critically wounded. Dekraai has pleaded not guilty in the case.
August 3, 2010 Manchester, Connecticut
8 killed, 2 injured
Omar S. Thornton, 34, a driver for Hartford Distributors, emerges from a disciplinary hearing and begins shooting, killing eight people at the family-owned distributorship and then himself.
February 12, 2010 Huntsville, Alabama
3 killed, 3 injured
Amy Bishop 45, a neurobiologist and assistant professor at the University of Alabama in Huntsville, shoots and kills 3 people at a biology faculty meeting. Bishop is later sentenced to life in prison without the possibility of parole.
January 30, 2006 Goleta, California
Jennifer San Marco, a former U.S. Postal Service employee, shot and killed six people at a mail processing plant in Goleta, Calif., on Jan. 30, 2006, before taking her own life.
December. 26, 2000 Wakefield, Massachusetts
Michael McDermott, a 42-year-old software tester shoots and kills seven co-workers at the Internet consulting firm where he is employed. McDermott, who is arrested at the offices of Edgewater Technology Inc., apparently was enraged because his salary was about to be garnished to satisfy tax claims by the Internal Revenue Service. He uses three weapons in his attack.
November 2, 1999 Honolulu, Hawaii
Byran Uyesugi, a Xerox copier repairman, shoots and kills seven coworkers with a Glock 9-mm semiautomatic handgun as they gather for a meeting to discuss his light workload. Uyesugi is a former high school sharpshooter who legally owns 11 handguns, five rifles and two shotguns. He is later found guilty of seven counts of murder and one of attempted murder for shooting at a man who escaped. He is serving a life sentence without possibility of parole.
July 29, 1999 Atlanta, Georgia
9 killed, 12 injured
Mark Orrin Barton, a 44-year-old chemist-turned-day trader, strolls into two investment offices and opens fire on fellow investors and office workers. The shootings at All-Tech Investment and Momentum Securities Inc., across the street from each other, leave nine people dead and 12 wounded. Barton eludes a manhunt for six hours before killing himself.
June 18, 1990 Jacksonville, Florida
10 killed, 4 injured
James E. Pough, a 42-year-old day laborer apparently distraught over the repossession of his car, walks into the offices of General Motors Acceptance Corp. and opens fire, killing seven employees and one customer before fatally shooting himself. Police later said they had confirmed that Pough was responsible for gunning down a man and woman on a Jacksonsville street 33 hours earlier.