OXFORD, Miss. (AP) — An attorney says in court documents that the man accused of mailing ricin-tainted letters to the president and a U.S. senator was chained to a chair and interrogated for several hours after his arrest.

Paul Kevin Curtis was in a Mississippi courtroom Friday afternoon, but prosecutors have asked to delay that hearing. They say Curtis’ car and home are being searched, and officers could not enter until they were inspected by a hazardous materials team.