sexual relationship with the son's wife. again, the one who is missing. alyssa acuna in our rockie mountain newsroom. what's up with the search. >> police say they are going to keep digging at that shallow grave site. dogs indicated human remains. today investigators sifted through what was already dug up looking for bone evidence and fragments. new dogs verify what the ones before them flagged. earlier police gave the impression they found actual physical remains. that's not the case. police tell me they were referring to the scent the dogs picked up. >> the girl's father was out there as well, right? >> yes, chuck cox was allowed to go to the site. investigators led him. it was his request. afterward he talked about his tour. take a listen. >> i got the feeling that my daughter is out here somewhere. >> who was strong feeling which i knew she wasn't there.