By Michael Zennie PUBLISHED: 13:25 EST, 23 April 2013 | UPDATED: 09:51 EST, 24 April 2013 Charges have been dropped against a Mississippi man charged with sending ricin-laced poison letters to President Barack Obama, a U.S. senator and a state judge after his lawyer argued that he has been framed by a former friend. 'I've never heard of ricin or whatever. I thought they said rice. I told them I don't eat rice,' Kevin Curtis said at a press conference today, describing the moment he was questioned by federal authorities. Defense lawyer Christi McCoy said whoever framed her client was able to lead the FBI to his door simply by including Curtis' catch-phrase 'I'm KC and I approve this message' and a few other clues in the threatening notes that were mailed to Washington.
@highlight
Kevin Curtis was set free on Tuesday after the FBI arrested him last week based on clues included in the poison letters sent to three politicians
@highlight
Defense lawyer said Curtis was framed by former friend who wrote Curtis' online catchphrase in the notes: 'I'm KC and I approve this message'
@highlight
Attorney claims FBI should be investigating J. Everett Dutschke, a former political candidate and accused child molester
@highlight
Dutschke had a disagreement and a harsh email exchange with Curtis recently, lawyer says
'@placeholder is absolutely 100 per cent innocent,' McCoy told CNN today.
I love my country and would never do anything to pose a threat to him or any other @placeholder official,' Curtis said Tuesday.