- Dec. 26, 2000: Seven people are shot to death at a Wakefield, Mass., Internet consulting company, Edgewater Technology Inc. Software tester Michael McDermott is charged with murder in the rampage. Authorities said the shooting may have stemmed from an Internal Revenue Service order to seize part of his wages to repay back taxes.
- Nov. 2, 1999: Employee Byran Uyesugi opens fire at a Xerox Corp. office in Honolulu, killing seven before fleeing in a company van. He surrendered after a five-hour standoff with police and was later convicted and sentenced to life without parole.
- Aug. 5, 1999: Former employee Alan Eugene Miller shoots two people to death at a construction supply company where he worked in Pelham, Ala., and then kills third at business where he formerly worked. Miller was later convicted and sentenced to death.
- July 29, 1999: Nine people killed and 13 wounded at two Atlanta brokerage offices. Gunman Mark Barton, a former day trader who had reportedly lost more than $400,000 on his investments, later commits suicide.
- March 6, 1998: Former accountant for the Connecticut Lottery Corp., Matthew Beck, 35, fatally shoots four lottery senior executives and then kills himself.
- Dec. 18, 1997: Arturo Reyes Torres, 43, kills four former co-workers at maintenance yard in Orange, Calif., and is shot to death by police.
- Sept. 15, 1997: Fired assembly line worker Arthur H. Wise, 43, allegedly opens fire at Aiken, S.C., parts plant, killing four and wounding three others. His trial is scheduled to begin in January.
- April 3, 1995: James Simpson, 28, walks into office of his former employer, Walter Rossler Co., a refinery inspection company, in Corpus Christi, Texas, and shoots five workers before shooting himself to death.
- Nov. 14, 1991: Fired postal worker Thomas McIlvane kills four supervisors and wounds five workers at the Royal Oak, Mich., post office, then kills himself.
- June 18, 1990: James Edward "Pop'' Pough kills nine and wounds four others at Jacksonville, Fla., office of General Motors Acceptance Corp., a car financing company, before killing himself.
Below is a list of the worst workplace shootings over the past 10 years that preceded Monday's shooting at a Navistar engine plant in Melrose Park, Ill.:
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