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Police and medics work the scene of a multiple shooting at Clackamas Town Center Mall in Clackamas, Ore., Tuesday Dec. 11, 2012. A gunman is dead after opening fire in the Portland, Ore., area shopping mall Tuesday, killing two people and wounding another, sheriff's deputies said. (AP Photo/Greg Wahl-Stephens)

An Oregon State police car leaves the parking lot where a gunman opened fire at the Clackamas Town Center shopping mall earlier in Portland, Ore., Tuesday, Dec. 11, 2012. Police say three people are dead, including the gunman. (AP Photo/Don Ryan)

This still image from video courtesy of KATU.COM shows emergency vehicles after a shooting December 11, 2012 outside the Clackamas Town Center south of Portland, Oregon. Two people were killed when a gunman wearing body armor opened fire at a mall in the western US state of Oregon, witnesses and local media reported. At least one other person was shot in Clackamas, south of Portland, according to The Oregonian newspaper, reporting a man brandishing a semiautomatic rifle near a branch of Macy's department store. AFP PHOTO / KATU.COM

A still image taken from video courtesy of KATU-TV shows first responders at a shooting scene at Clackamas Town Center in Portland, Oregon, December 11, 2012. A gunman opened fire inside an Oregon shopping mall on Tuesday in the middle of the busy Christmas shopping season, killing at least two persons before the shooter was "neutralized," police said. REUTERS/KATU-TV/Handout

A paramedic talks on the phone outside Clackamas Town Center in Clackamas, Ore., where a shooting occurred Tuesday, Dec. 11, 2012. A gunman opened fire in the Portland, Ore., area shopping mall Tuesday, killing at least one person and wounding an unknown number of others, sheriff's deputies said. (AP Photo/The Oregonian, Bruce Ely)

Police and medics outside the scene of a multiple shooting at Clackamas Town Center Mall in Clackamas, Ore., Tuesday Dec. 11, 2012. A gunman is dead after opening fire in the Portland, Ore., area shopping mall Tuesday, killing two people and wounding another, sheriff's deputies said. (AP Photo/Greg Wahl-Stephens)

Law enforcement personnel work the scene of a shooting at the Clackamas Town Center in Clackamas, Ore. Tuesday, Dec. 11, 2012. A gunman opened fire in a Portland, Ore., area shopping mall Tuesday, killing at least one person and wounding an unknown number of others, sheriff's deputies said. (AP Photo/The Oregonian, Bruce Ely)

A family leaves the scene of a multiple shooting at Clackamas Town Center Mall in Clackamas, Ore., Tuesday Dec. 11, 2012. A gunman is dead after opening fire in the Portland, Ore., area shopping mall Tuesday, killing two people and wounding another, sheriff's deputies said. (AP Photo/Greg Wahl-Stephens)

Law enforcement personnel work the scene of a shooting at the Clackamas Town Center in Clackamas, Ore. Tuesday, Dec. 11, 2012. A gunman opened fire at the Portland, Ore., area shopping mall Tuesday, killing at least one person and wounding an unknown number of others, sheriff's deputies said. (AP Photo/The Oregonian, Bruce Ely)

People look on outside Clackamas Town Center in Clackamas, Ore., where a shooting occured Tuesday, Dec. 11, 2012. A gunman opened fire in the Portland, Ore., area shopping mall Tuesday, killing at least one person and wounding an unknown number of others, sheriff's deputies said. (AP Photo/The Oregonian, Bruce Ely)

Clackamas County sheriff's Lt. James Rhodes speaks to the media outside the scene of a multiple shooting at Clackamas Town Center Mall in Clackamas, Ore., Tuesday Dec. 11, 2012. A gunman is dead after opening fire in the Portland, Ore., area shopping mall Tuesday, killing two people and wounding another, sheriff's deputies said. (AP Photo/Greg Wahl-Stephens)

Media gather around Clackamas County sheriff's Lt. James Rhodes during a news conference at the scene of a multiple shooting at Clackamas Town Center Mall in Clackamas, Ore., Tuesday Dec. 11, 2012. A gunman is dead after opening fire in the Portland, Ore., area shopping mall Tuesday, killing two people and wounding another, sheriff's deputies said. (AP Photo/Greg Wahl-Stephens)

Shoppers wait to be evacuated outside the scene of a multiple shooting at Clackamas Town Center Mall in Clackamas, Ore., Tuesday Dec. 11, 2012. A gunman is dead after opening fire in the Portland, Ore., area shopping mall Tuesday, killing two people and wounding another, sheriff's deputies said. (AP Photo/Greg Wahl-Stephens)

CLACKAMAS, OR - DECEMBER 11: Emergency vehicles gather outside the Clackamas Town Center mall after a shooting on December 11, 2012 in Clackamas, Oregon. According to reports, two victims and the gunman are dead after emergency dispatchers received reports that a shooting had occurred and a man was seen with an assault rifle near the mall's food court around 3:29 p.m. (Photo by Craig Mitchelldyer/Getty Images)

A tactical team moves through the mall parking lot at Clackamas Town Center in Portland, Ore., Tuesday, Dec. 11, 2012. Witnesses say the scene went from cheery to chaotic in seconds when a gunman opened fire in the suburban Portland shopping mall Tuesday, killing two people and wounding another. (AP Photo/The Oregonian, Thomas Boyd)

A couple with a child embrace after they were released from the mall at Clackamas Town Center in Portland, Ore., Tuesday, Dec. 11, 2012. Witnesses say the scene went from cheery to chaotic in seconds when a gunman opened fire in the suburban Portland shopping mall Tuesday, killing two people and wounding another. (AP Photo/The Oregonian, Thomas Boyd)

Mall workers and shoppers wait to be cleared to leave REI at Clackamas Town Center in Portland, Ore., where a shooting occurred Tuesday, Dec. 11, 2012. A gunman opened fire at the suburban Portland shopping mall Tuesday, killing two people and wounding another as people were doing their Christmas shopping, authorities said. (AP Photo/The Oregonian, Thomas Boyd)

A law enforcement official secures the scene after a shooting at Clackamas Town Center in Portland, Ore., Tuesday, Dec. 11, 2012. A gunman is dead after opening fire at the shopping mall Tuesday, killing two people and wounding another, sheriff's deputies said. (AP Photo/The Oregonian, Thomas Boyd)

Clackamas County Sheriffs Lt. James Rhodes speaks during a news conference outside the Clackamas Town Center in Portland, Ore., Tuesday, Dec. 11, 2012. A gunman opened fire in the suburban Portland shopping mall Tuesday, killing two people and wounding another as people were doing their Christmas shopping, authorities said. (AP Photo/Statesman-Journal, Thomas Patterson)

Emergency personnel stage an area outside the Clackamas Town Center in Portland, Ore., where a shooting occurred, Tuesday, Dec. 11, 2012. Witnesses say the scene went from cheery to chaotic in seconds when a gunman opened fire in the suburban Portland shopping mall Tuesday, killing two people and wounding another. (AP Photo/The Oregonian, Thomas Boyd)

A tactical team moves through the mall parking lot at Clackamas Town Center in Portland, Ore., Tuesday, Dec. 11, 2012. Witnesses say the scene went from cheery to chaotic in seconds when a gunman opened fire in the suburban Portland shopping mall Tuesday, killing two people and wounding another. (AP Photo/The Oregonian, Thomas Boyd)

Clackamas County Sheriffs Sgt. Adam Phillips speaks during a news conference outside the Clackamas Town Center in Portland, Ore., Tuesday, Dec. 11, 2012. A gunman opened fire in the suburban Portland shopping mall Tuesday, killing two people and wounding another as people were doing their Christmas shopping, authorities said. (AP Photo/Statesman-Journal, Thomas Patterson)

Medical personnel are staged just outside Clackamas Town Center in Portland, Ore., after a shooting Tuesday, Dec. 11, 2012. A gunman is dead after opening fire in the shopping mall Tuesday, killing two people and wounding another, sheriff's deputies said. (AP Photo/The Oregonian, Thomas Boyd)

This photo provided by the Clackamas County Sheriff's Department shows Jacob Tyler Roberts, the suspect in a shooting at an Oregon Mall on Tuesday Dec. 11, 2012. Roberts, who killed two people and himself in the shooting rampage, was 22 years old and used a stolen rifle from someone he knew, authorities said Wednesday. Roberts had armed himself with an AR-15 semiautomatic rifle and had several fully loaded magazines when he arrived at a Portland mall on Tuesday, said Clackamas County Sheriff Craig Roberts. (AP Photo/Clackamas County Sheriff's Department)

This combo made from undated photos released by the Clackamas County Sheriff's Dept. shows Oregon mall shooting victims shows Steven Mathew Forsyth, 45, of West Linn, Ore., left, and Cindy Ann Yuille, 54, of Portland, Ore. The gunman who killed two people and himself in a shooting rampage on Tuesday, Dec. 11, 2012 was 22 years old and used a stolen rifle from someone he knew, authorities said Wednesday. (AP Photo/Clackamas County Sheriff's Dept.)

Flowers are left by a Clackamas Town Center shopping mall sign in Portland, Oregon, December 12, 2012. The masked gunman who opened fire in a crowded Oregon shopping mall, killing two people and wounding a third before taking his own life, appeared to have acted in a blind rampage with no known motive, authorities said on Wednesday. REUTERS/Steve Dipaola

Television satellite trucks line the roadway by Clackamas Town Center shopping mall in Portland, Oregon, December 12, 2012. The masked gunman who opened fire in a crowded Oregon shopping mall, killing two people and wounding a third before taking his own life, appeared to have acted in a blind rampage with no known motive, authorities said on Wednesday. REUTERS/Steve Dipaola

Leslie King, right and Tenille Beseda place flowers Wednesday Dec. 12, 2012, at the entrance to the scene of a multiple shooting yesterday at Clackamas Town Center Mall in Clackamas, Ore. A gunman who opened fire on shoppers at a Portland mall had no connection to the two people he fatally shot and wanted to kill as many people as possible, police said Wednesday. (AP Photo/Greg Wahl-Stephens)