Man arrested in connection with ricin letters

Paul Kevin Curtis was arrested at his home in Corinth Mississippi on suspicion of mailing three letters containing a substance which tested positive for ricin.
One letter addressed to President Barack Obama was intercepted at an off-site White House mail facility. It was “very similar” to one addressed to Sen. Roger Wicker, R-Miss. A third letter with poisonous ricin was intercepted at the office of Senator Carl Levin, chairman of the Senate Armed Forces Committee.