A federal judge Wednesday has set aside all court dates for a man charged with threatening to kill President Clinton.

David Shane Shelby, 29, will be going to a federal corrections center in Springfield, Mo., within 10 days to determine if he is competent to stand trial.U.S. Magistrate Ronald Boyce canceled all court dates dealing with Shelby, including his April 3 trial, until the psychological evaluation is completed. The evaluation will take 30-45 days, said Joe Fratto, Shelby's attorney.

Shelby is being held without bail in the Salt Lake County Jail on federal charges he threatened to kill Clinton. He has also been indicted on several charges of illegally possessing firearms and explosives.

He was arrested Jan. 25 in Ogden after he reportedly tried to mail a light-bulb bomb to Clinton and a gun to convicted mass-murderer Charles Manson.

Earlier this week, a federal grand jury in Indiana indicted Shelby on charges of mailing threats to Clinton and Vice President Al Gore.