UPDATE: Investigators Haven't Found Any Ricin in Suspects Home

UPDATED: Monday, April 22, 2013 --- 12:34pm

OXFORD, Miss. (AP) -- Investigators say they haven't found any ricin in the house of Mississippi man accused of mailing poisoned letters to President Barack Obama, a U.S. senator and a local judge.

FBI Agent Brandon Grant, testifying in federal court Monday, said a Friday search of Paul Kevin Curtis' house in Corinth, Miss., did not turn up ricin or ingredients for the poison. A search of Curtis' computers has found no evidence so far that he researched making ricin.

Federal investigators believe the letters were mailed by Curtis, an Elvis impersonator who family members say suffers from bipolar disorder.

Through his lawyer, Curtis has denied involvement in letters sent to Obama, Mississippi Republican Sen. Roger Wicker, and a Lee County, Miss., judge.

Curtis' lawyer suggests in court that an enemy may have framed Curtis.

Copyright 2013: Associated Press
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UPDATED Thursday, April 18, 2013 ---- 11:49 a.m.

CORINTH, Miss. (AP) -- The Mississippi man accused of mailing letters with suspected ricin has been charged with threatening President Barack Obama and others.

The U.S. Department of Justice said in a news release Thursday that 45-year-old Paul Kevin Curtis faced two federal charges accusing him of threatening the president and others.

Curtis was to appear in federal court Thursday. If convicted, he could face up to 15 years in prison.

An affidavit says the letters sent to Obama, U.S. Sen. Roger Wicker and a judge in Mississippi told the recipients: "Maybe I have your attention now even if that means someone must die."

Copyright 2013: Associated Press

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UPDATED Wednesday, April 17, 2013 --- 12:44 p.m.

PHOENIX (AP) -- Authorities are investigating two suspicious letters that were sent to the Phoenix office of U.S. Sen. Jeff Flake of Arizona.

Emergency crews in hazardous materials gear rushed to the scene and evacuated people in parts of the building, located in the trendy Biltmore neighborhood of Phoenix.

Police spokesman Tommy Thompson says there were two suspicious packages and authorities are trying to find out if they are dangerous.

The situation came a day after authorities said a letter containing ricin was mailed to the office of a Mississippi senator. The Secret Service also says it has intercepted a letter addressed to President Barack Obama that contained a suspicious substance.

Flake is a Republican who was elected to the Senate last year.

Copyright 2013: Associated Press

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UPDATED Wednesday, April 17, 2013 --- 11:22 a.m.

WASHINGTON (AP) -- Michigan Sen. Carl Levin says his regional office in Saginaw received a suspicious letter and that authorities have been alerted.

Levin says in a statement that an aide received the letter Wednesday, but did not open it. Authorities are now investigating.

The Democratic lawmaker says he and his staff do not know if the mail presented a threat.

Separately, the FBI says a substance in letters sent to President Barack Obama and Mississippi Sen. Roger Wicker have preliminarily tested positive for ricin, a potentially fatal poison.

The FBI says those letters are related and are both postmarked out of Memphis, Tenn., dated April 8. Both letters were intercepted at off-site mail facilities.

Copyright 2013: Associated Press

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UPDATED Wednesday, April 17, 2013 --- 11:22 a.m.

WASHINGTON (AP) -- The FBI says preliminary tests on a letter sent to President Barack Obama indicate the presence of poisonous ricin.

The letter is undergoing further testing because preliminary field tests can be unreliable, creating false positives.

The letter was intercepted at a facility away from the White House. It comes the day after officials said a letter sent to Sen. Roger Wicker tested positive for poisonous ricin. That letter to Wicker, a Republican, was intercepted at a Senate mail facility just outside Washington.

The FBI says there is no indication of a connection to the bombing at Monday's Boston Marathon.

Copyright 2013: Associated Press

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Posted Wednesday, April 17, 2013 --- 10:59 a.m.

WASHINGTON (AP) -- Law enforcement officials say a second suspicious letter that has been received in Washington was actually directed to the White House, not the Senate.

Two officials told The Associated Press on Wednesday that the letter was being treated in the same manner as a separate one sent to Mississippi Sen. Roger Wicker and was undergoing field tests.

The officials spoke on the condition of anonymity because the investigation is ongoing.

The U.S. Secret Service said it intercepted a letter addressed to President Barack Obama that contained a "suspicious substance."

The letter to Wicker, a Republican, was intercepted at a Senate mail facility just outside Washington and has tested positive for ricin. Sen. Claire McCaskill has said authorities have a suspect in mind in that case, though no one has been charged.

Copyright 2013: Associated Press

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WASHINGTON (AP) -- The U.S. Secret Service says it has intercepted a letter addressed to President Barack Obama that contained a "suspicious substance."

Secret Service spokesman Ed Donovan says the letter was intercepted at a facility away from the White House. He says the letter was received Tuesday.

The letter comes a day after lawmakers said a letter was mailed to Sen. Roger Wicker that tested positive for poisonous ricin. Another senator said police have a suspect in mind.

Tensions have been high in Washington and across the country since the deadly bombings on Monday at the Boston Marathon that killed three people and injured more than 170.

Copyright 2013: Associated Press


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