FLINT, Mich. -

A federal magistrate said a Flint man accused of threatening to kill three Michigan members of Congress is competent to stand trial.

Randall Dellinger was released on a $25,000 bond following Wednesday's ruling.

The FBI said threatening calls were made to the offices of U.S. Sens. Carl Levin and Debbie Stabenow and Dellinger's congressman, U.S. Rep. Dale Kildee.

Authorities said Dellinger believes he is "dying of leukemia caused by the RF transmitters."

Dellinger told agents transmitters were planted in him while serving a state prison term for detonating grenades.

He was arrested in June.

MLive.com said federal records show Dellinger threatened Kildee in a voicemail message "if he didn't "do something" about the Michigan Corrections Department.

Similar messages were left at Stabenow's Flint office and Levin's Washington D.C. office.