TOPEKA, Kan. (AP) — A northeastern Kansas man is facing a felony charge of threatening to kill one of the state’s congressmen.

But a trial for 31-year-old Chase Neill of Lawrence has been postponed indefinitely so that a federal judge can decide whether he is too mentally ill to help his lawyers.

Federal prosecutors contend in court documents that Neill developed a fixation on eastern Kansas Republican Representative Jake LaTurner. Neill is accused of threatening to kill LaTurner in a June 5 voicemail message left at LaTurner’s office and continuing to make threatening calls the following day.

U.S. District Judge Holly Teeter ordered last month that his mental health be examined.