Pima County Sheriff Chris Nanos says he believes there's more video evidence as investigators comb through 'tens of thousands' of clips. Ransom notes released in bid to ID suspect.
https://www.foxnews.com/us/nancy-guthrie-sheriff-says-investigators-may-have-more-video-evidence-review-thousands-clips
https://www.foxnews.com/us/nancy-guthrie-sheriff-says-investigators-may-have-more-video-evidence-review-thousands-clips