These are intersting but probably not..
http://www.tucsonnewsnow.com/story/18621086/550-pages-released-in-celis-case
UPDATE: One detective reported a
positive Luminol reason on the "driver's seat of the Toyota Corolla," that was at the residence. Luminol is used in forensic investigations to identify traces of blood.
Multiple potential sightings were reported including one from the Tivoli Gardens Restaurant in Surprise, AZ. A person notified police saying,
"A stocky man in his middle or late 30's was more or less dragging a small girl fitting the description of (Isabel) out of the Tivoli Gardens. I held the exit/front door open for them, but thought it a bit unusual...the little girl was essentially dragged out by the hand before she could respond to my salutation."