Published: Apr 23, 2013 6:28 PM EDT
Updated: Apr 23, 2013 11:15 PM EDT

TUPELO, Miss. (AP) - A Mississippi man is speaking out now that charges have been dropped against him in an investigation of ricin-laced letters.
    
Paul Kevin Curtis says he respects President Barack Obama, loves his country and that he "would never do anything to pose a threat."
    
Curtis says this week has been a nightmare.
    
Curtis was arrested last Wednesday after the detection of poisoned letters to Obama, a U.S. senator and a judge.
    
Charges were dropped late Tuesday after searches of Curtis' house failed to turn up ricin.