Iowa Code Title XVI. Criminal Law and Procedure [Chs. 687-916] § 906.14. Detainers

1. Prisoners against whom detainers have been filed may, after serving a portion of their sentence, be released by parole to the institution or authorities filing the detainer.

2. Any detainer filed against a prisoner must within six months be supported by a grand jury indictment or county attorney's information. In the event such indictment is returned or information is filed, the prisoner shall have the right to demand immediate trial at the next term of court where the charge is filed. The prosecuting agency shall pay all costs of transportation, necessary expenses incurred by the prisoner, and such guards and other safety measures as the warden shall deem necessary for the prisoner to appear at the prisoner's trial.

3. In the event a detainer is not supported within six months by a county attorney's information or grand jury indictment, or in the event the prosecuting agency refuses or fails to give the prisoner immediate trial, or refuses or fails to furnish transportation and pay all other necessary and related costs incident to the prisoner appearing at the prisoner's trial, the detainer shall be held to be invalid and the parole board shall disregard such detainer in considering a prisoner for parole.