Notable shootings at shopping malls worldwide:
Dec. 11, 2012: A masked gunman wearing camouflage opened fire at the Clackamas Town Center in Portland, Ore., killing two people and wounding another before taking his own life.
Oct. 21, 2012: Radcliffe Haughton, 45, killed his wife and two others when he opened fire at a spa at a major shopping mall in Brookfield, Wis., where his wife worked. He then killed himself.
June 2, 2012: One person was killed and seven others injured in a shooting at the Eaton Centre in Toronto. Police said the suspect and two of the victims were members of the same gang.
Oct. 29, 2011: Hundreds of people cowered for two hours inside a shopping mall in Cabo San Lucas, Mexico, while security forces traded gunfire with armed men in the parking lot and then searched stores for suspects. No one was injured.
April 9, 2011: Tristan van der Vlis, 24, fired more than 100 rounds from three guns in a suburban Dutch shopping mall, killing six people before turning one of the weapons on himself.
Jan. 5, 2011: A man exchanged gunfire with police at Chandler Fashion Center in suburban Phoenix, sending shoppers fleeing and prompting a mall lockdown as the suspect holed up in a fast food restaurant. There were no injuries.
June 6, 2010: A gunman shot and killed four people and wounded three others at a restaurant inside a Miami-area mall before killing himself.
Dec. 31, 2009: A lone gunman dressed in black killed four people in the Sello shopping mall in Espoo, Finland, before returning home and taking his own life.
May 18, 2009: Up-and-coming rapper Dolla was fatally shot in a parking garage at the upscale Beverly Center mall in Los Angeles.
Nov. 22, 2008: A teenager was killed and another was seriously wounded in a shooting at the Southcenter Mall near Seattle. The mall was locked down for six hours as police tried in vain to find the gunman.
Oct. 8, 2008: A shooting that stemmed from a complaint over a clothing purchase left a store employee dead and sent panicked shoppers running for cover at the Knoxville Center Mall in Tennessee.
July 16, 2008: S.A. Carson, 48, fatally shot his ex-wife while she sat on a bench at the Jamestown Mall near St. Louis, then shot himself, collapsing next to his ex-wife's body and terrifying merchants and shoppers. No one else was hurt.
Dec. 5, 2007: A 19-year-old man with a rifle opened fire at Westroads Mall in Omaha, Neb., killing eight people before taking his own life. Five people are wounded, two critically.
April 29, 2007: David W. Logsdon, 51, shot and killed two people when he opened fire at the Ward Parkway Center in Kansas City, Mo. Logsdon died in a shootout with police.
Feb. 12, 2007: Sulejman Talovic, 18, killed five people and wounded four others at the Trolley Square mall in Salt Lake City, Utah. Talovic died at the scene in a shootout with police.
Nov. 20, 2005: Dominick Sergio Maldonado, 22, wounded seven people and took four others hostage in the Tacoma Mall in Tacoma, Wash. The rampage left one victim partially paralyzed.
Jan. 3, 2000: A 17-year-old was killed and an 8-year-old boy was wounded in a shooting at the Galleria mall in White Plains, N.Y.