(735 ILCS 5/9-212) (from Ch. 110, par. 9-212)
Sec. 9-212. Evidence of service. When such demand is made or notice served by an officer authorized to serve process, the officer's return is prima facie evidence of the facts therein stated, and if such demand is made or notice served by any person not an officer, the return may be sworn to by the person serving the same, and is then prima facie evidence of the facts therein stated.
(Source: P.A. 82-280.)