Ricin found in letter to US Senate office: Official
WASHINGTON (AFP) - Federal authorities intercepted a letter bound for the Washington office of US Senator Roger Wicker that contained the deadly poison ricin, a Senate leadership aide said.
The letter was detected during a routine inspection of mail at an off-site facility on Tuesday and did not reach the US Capitol or Senator Wicker's office, the aide said, citing Senate Majority Leader Harry Reid, who discussed the security breach with lawmakers.
The letter "tested positive for ricin," the aide told reporters.
FBI Director Robert Mueller and Homeland Security Secretary Janet Napolitano told senators about the incident during a closed-door briefing on Tuesday evening on the terrorist attacks in Boston, the official said.