DVDizzy Forum

The FBI said Thursday it confirmed the presence of the deadly poison ricin in letters sent to President Barack Obama, a U.S. senator and a judge.

Earlier, an Elvis impersonator charged in the case appeared in federal court in Oxford Mississippi.

During a four-minute hearing, Magistrate Judge S. Allan Alexander ordered Paul Kevin Curtis -- who appeared in court with attorney Christi McCoy -- to remain in custody until a grand jury issues an expected indictment and a preliminary and detention hearing on April 29.

In confirming the letters tested positive for ricin, the FBI said it was "not aware of any illness as a result of exposure to these letters."

Further tests were being conducted, the FBI statement said.

Curtis, 45, a resident of Corinth, Mississippi, was charged with sending a threat to the president.