Iowa Code § 643.11: Defendant examined.

When it appears by affidavit that the property claimed has been disposed of or concealed so that the writ cannot be executed, the court upon verified petition therefor, may compel the attendance of the defendant or other person claiming or concealing the property, and examine the person on oath as to the situation of the property, and punish a willful obstruction or hindrance or disobedience of the order of the court in this respect as in case of contempt.