Mississippi man suspected in ricin case has been arrested, FBI says "It is my understanding that the authorities have confirmed Mr. Dutschke's arrest," said Lori Nail Basham, Dutschke's attorney. We have no comment at this time. Dutschke was charged with "knowingly developing, producing, stockpiling, transferring, acquiring, retaining and possessing a biological agent, toxin and delivery system, for use as a weapon." If convicted, he faces maximum possible penalties of life imprisonment, a $250,000 fine and 5 years of supervised release. He is scheduled to appear in federal court in Oxford, Miss. on Monday. Federal authorities turned their attention to Dutschke on Tuesday, after they dropped charges against Paul Kevin Curtis, 45, who is known in Mississippi for his work as an Elvis impersonator. After Curtis was released from custody earlier this week, he said he and Dutschke had had a falling out and described e-mail exchanges between them that culminated in his challenge to meet Dutschke for a fight that never occurred. Dutschke acknowledged his conflict with Curtis and told the Associated Press that their last contact was in 2010, when Dutschke threatened to sue Curtis for saying that he, Curtis, was a member of Mensa, a group for people with high IQs. FBI spokeswoman Deborah R. Madden declined to provide details about the investigation, including what evidence prompted this latest arrest. Linda King, a spokeswoman with the U.S. Attorney's Office in Oxford, Miss, said Saturday afternoon that the agency was not releasing any additional details about the case. Dutschke went into hiding on Thursday to escape the media attention, prompting the FBI and local law enforcement officials to launch a five-hour-long manhunt for him. He has insisted he had nothing to do with the letters. Federal authorities officials searched his home Tuesday for more than 10 hours and spent Wednesday searching the site of his former studio. Dutschke's studio closed in January when he was under a child-molestation investigation. The alleged victim is a 7-year-old girl who had visited his studio, Basham said. Law enforcement officials, speaking on the condition of anonymity on the day Curtis was released, said they believed Curtis had been framed. The evidence that led the FBI to arrest Curtis included several details that could be found on social media sites or were known to Dutschke.