ABOUT RICIN
Ricin is derived from the castor plant that makes castor oil. What makes it scary is that there is no antidote and it is at its deadliest when inhaled. It is not contagious and a draft of a 2010 Homeland Security Department handbook lists only one person killed by ricin. That was the political assassination, in 1978, of a Bulgarian dissident who was injected — via specialized secret-agent style umbrella— with a ricin pellet.
People have been poisoned with ricin after eating castor beans, but it is not as well absorbed through the digestive track as it is when it is injected or inhaled, according to the Centers for Disease Control and Prevention. The CDC categorizes ricin as a “Class B” threat, which is the agency’s second-highest threat level. It ranks behind anthrax, botulism, plague, smallpox, tularemia and viral hemorrhagic fevers.
Associated Press
An envelope addressed to Sen. Roger Wicker, R-Miss., tested positive Tuesday for ricin, a potentially fatal poison, congressional officials said, heightening concerns about terrorism a day after a bombing killed three and left more than 170 injured at the Boston Marathon.
One senator, Claire McCaskill, D-Mo., said authorities have a suspect in the fast-moving case, but she did not say if an arrest had been made. She added the letter was from an individual who frequently writes lawmakers.
The discovery came as lawmakers were demanding answers to the bombing at the Boston Marathon a day earlier, and the Guardian quoted Sen. Mary Landrieu, D-La., as saying lawmakers were informed about it during a briefing about the bombings. There was no evidence of a connection between the bombings and the letter addressed to Wicker.
The FBI and U.S. Capitol Police were both investigating.
Terrance W. Gainer, the Senate sergeant-at-arms, said in an emailed message to Senate offices that the envelope to Wicker had no obviously suspicious outside markings, bore a postmark of Memphis, Tenn., and lacked a return address.
He added there was “no indication that there are other suspect mailings.” Yet he urged caution, and also said the Senate off-site mail facility where the initial tests were performed on the letter will be closed for a few days while the investigation continues.
The letter was discovered at a mail processing plant in Prince George’s County in suburban Maryland, said Sen. Dick Durbin, D-Ill.
CNN reported that the envelope had tested positive in a first routine test, before being retested two more times, each time coming up positive. It also reported that Wicker was being given extra security protection.
Wicker’s office issued a statement saying “any inquiries regarding member security must be directed to the United States Capitol Police.”
Capitol Police had no immediate comment. But Majority Leader Harry Reid told reporters of the letter, and other lawmakers said they had been provided information by the office of the Senate sergeant-at-arms.
Milt Leitenberg, a University of Maryland bioterrorism expert, said ricin is a poison derived from the same bean that makes castor oil. He said it must be ingested to be fatal.
“Luckily, this was discovered at the processing center off premises,” Durbin said. He said all mail to senators is “roasted, toasted, sliced and opened” before it ever gets to them.
One law enforcement official said evidence of ricin appeared on preliminary field tests of the letter, although such results are not deemed conclusive without further testing. The official spoke on condition of anonymity because the investigation remains active.
The discovery evoked memories of the days after the terrorist attacks of Sept. 11, 2001, when mail laced with anthrax began appearing in post offices, newsrooms and congressional offices.
That included letters sent to Sen. Tom Daschle, D-S.D., who was Senate majority leader, and Sen. Patrick Leahy, D-Vt. Two Senate office buildings were closed during that investigation.
Overall, five people died and 17 others became ill. The FBI attributed the attack to a government scientist who committed suicide in 2008.
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