735 ILCS 5/19-118
Current through Public Act 103-593
If it appears by affidavit of the plaintiff, his or her attorney or agent, or by the return of the officer, that any defendant in such action is not a resident of this State, or has departed from this State, or on due inquiry cannot be found, or is concealed within this State, so that process cannot be served on him or her, notice may be given as provided by law in cases of attachment, and with like effect.
735 ILCS 5/19-118