>> that's right. elvis had left the building. the fbi admitted they did not have anything on him and they released him. >> when you've been charged with something you just never heard of ricin or whatever, i thought they said rice so i said i don't even right. >> curtis and his attorneys maintain he was set up by an acquaintance with a grudge. >> the government was able to basically find another suspect who we believe is the true perpetrator of this heinous crime. >> the fbi has not named as a suspect that other man jay everett dusky but dusky's lawyer confirms to cnn agents did search his home in connection with the ricin investigation. today they searched his former karate studio where he taught martial arts. curtis says there's been bad blood between them for some time now. have you had a long going feud with him? >> yes, several years. he's been showing up on my radar. people in town coming to me asking do you know this guy? >> dusky's lawyer says he once