735 ILCS 5/4-134
In all cases of attachment, any person, other than the defendant, claiming the property attached, or garnisheed may intervene, verifying his or her petition by affidavit, without giving bond, but such property shall not thereby be replevied; and the court shall immediately (unless good cause be shown by either party for a continuance) direct a jury to be impaneled to inquire into the right of the property. In all cases where the jury finds for the claimant, and that such claimant is also entitled to the possession of all or any part of such property, the court shall enter judgment for such claimant accordingly and order the property attached or garnisheed to which such claimant is entitled to be delivered to such claimant, and the payment of his or her costs in such action. In cases where the jury finds for a claimant but further finds that such claimant is not then entitled to the possession of any such property, such claimant shall be entitled to his or her costs; and where the jury find for the plaintiff in the attachment, such plaintiff shall recover his or her costs against such claimant. If such claimant is a non-resident of the State he or she shall file security for costs as in cases of non-resident plaintiffs.
735 ILCS 5/4-134