The American flag on the East Front of the U.S. Capitol is lowered to half-staff on Capitol Hill, Monday, April 15, 2013, in Washington, to honor the victims of the explosions at the Boston Marathon. (AP Photo/Alex Brandon)
WASHINGTON (AP) -- Senate Majority Leader Harry Reid says a letter containing ricin or another poision was sent to the office of Sen. Roger Wicker of Mississippi.
In brief remarks to reporters in the Capitol, Reid did not say when the letter was sent. It's customary for mail addressed to congressional offices to be screened at an off-site facility.
Sen. Mary Landrieu also confirmed a letter containing poison had been to a sent to a senator. She said lawmakers were informed of the fact at a closed-door briefing about the Boston Marathon bombings.