Officers renewed the search for signs of Nicole Morin on Wednesday after receiving a tip from the public.
Close to 40 officers scoured a rural area near Barrie that was previously searched when Nicole vanished in 1985.
But police say no new evidence has surfaced and they won't return to the site Friday.
Nicole was eight when she disappeared after leaving her family's apartment in a west-end Toronto building.
Police, who still regard the disappearance as a missing-person's case, have never arrested anyone in the case and have ruled out any family involvement.
(680News, The Canadian Press)