OXFORD, Miss. - Investigators have not found any ricin in the house of a Mississippi man accused of mailing poisoned letters to President Obama, a U.S. senator, and a local judge, according to testimony Monday from an FBI agent.
Agent Brandon Grant said that a search of Paul Kevin Curtis' vehicle and house in Corinth, Miss., on Friday did not turn up ricin, ingredients for the poison, or devices used to make it.
A search of Curtis' computers has found no evidence so far that he researched making ricin.
Defense lawyers for Curtis say investigators' failure to find any ricin means the government should release their client. That lack of physical evidence could loom large as a detention and preliminary hearing continues Tuesday morning.