Tape Marking News Today

>> reporter: this was day >> who? >> michelle. >> oh, god, what about her? 49 since michelle disappeared. and once again her san diego >> she went missing last night relatives loaded into cars ay.m her work. around midnight and drove the 8 hours north to the san >> and talking to her friends francisco bay. "dateline" was there, watching, as they gathered for a morning briefing to prepare them for the and such, we understand that you long day of searching ahead. >> if you take nothing else away g...

East of the san francisco bay. as the search party made its way up the canyon, they tied off here and there pink ribbons. weve got a system of tape marking that we use. and then we report in to the investigators and they follow up. everything were doing here is to support the police effort and bringing back michelle. keith morrison: a complication. this area is a haven for the homeless. its also a notorious dumping ground for murder victims. here, one of the searchers found an encampment and ins...

>> weve got a system of tape marking that we use and we report in to the investigators and they follow up. everything were doing here is to support the police effort in bringing back michelle. >> reporter: a complication -- this area is a haven for the homeless. its also a notorious dumping ground for murder victims. here, one of the searchers found an encampment -- and inside, a sleeping bag.

Narrow canyon in the hills east of the san francisco bay. as the search party made its way up the canyon, they tied off, here and there, pink ribbons. >> weve got a system of tape marking that we use and we report in to the investigators and they follow up. everything were doing here is to support the police effort in bringing back michelle. >> reporter: a complication -- this area is a haven for the homeless. its also a notorious dumping ground for murder victims. here, one of the searchers fou...

Have happened in this area. >> the area -- a narrow canyon in the hills east of the san francisco bay. as the search party made its way up the canyon, they tied off, here and there, pink ribbons. >> weve got a system of tape marking that we use and we report in to the investigators and they follow up. everything were doing here is to support the police effort in bringing back michelle. >> a complication -- this area is a haven for the homeless. its also a notorious dumping ground for murder vict...

Have happened in this area. keith morrison: the area, a narrow canyon in the hills east of the san francisco bay. as the search party made its way up the canyon, they tied off here and there pink ribbons. weve got a system of tape marking that we use. and then we report in to the investigators and they follow up. everything were doing here is to support the police effort and bringing back michelle. keith morrison: a complication. this area is a haven for the homeless. its also a notorious dumpin...

This portion right here, okay? every single search that we put you on today, tomorrow, we consider a potential crime scene. >> reporter: the police suggested a zone to be searched. but thats all about all the information they provided. >> we dont know exactly why but they say its based on all the evidence in their timeline, they believe that something might have happened in this area. >> reporter: the area -- a narrow canyon in the hills east of the san francisco bay. as the search party made it...

Have happened in this area. keith morrison: the area, a narrow canyon in the hills east of the san francisco bay. as the search party made its way up the canyon, they tied off here and there pink ribbons. weve got a system of tape marking that we use. and then we report in to the investigators and they follow up. everything were doing here is to support the police effort and bringing back michelle. keith morrison: a complication. this area is a haven for the homeless. its also a notorious dumpin...

"dateline" was there, watching, as they gathered for a morning briefing to prepare them for the long day of searching ahead. >> if you take nothing else away from this presentation, take this portion right here, okay? every single search that we put you on today, tomorrow, we consider a potential crime scene. >> reporter: the police suggested a zone to be searched. but thats all about all the information they provided. >> we dont know exactly why but they say its based on all the evidence in the...

They tied off here and there pink ribbons. weve got a system of tape marking that we use. and then we report in to the investigators and they follow up. everything were doing here is to support the police effort and bringing back michelle. keith morrison: a complication. this area is a haven for the homeless. its also a notorious dumping ground for murder victims. here, one of the searchers found an encampment and inside a sleeping bag. ian! yeah? do you want to check out, this looks like a slee...