also we observed the waterline and then we walked back out of the canyon. >> did you find anything yetrooke, no human remains were found. however, because of the reliance, the strength that they are putting into this tip, we plan to be back to the canyon to further investigate certain areas of the canyon for further study and also to investigate some areas around elephant butte. we have, since the media attention on this case due to the search, we have received several tips that are going to lead us back to other areas of the elephant butte lake. >> so let's back up because this is all connected to a man, david parker ray, who died in prison back in 2002. investigators think he was one of the most prolific serial killers in the state of new mexico and yet there's no proof that he ever killed. so why this believe that f thatd have been a serial killer? >> well, he indicated that he abducted as many as 40 victims from several states. one of his techniques was to give the women that he beabduct was to give them a drug to forget what he had done to them. he had a 22-foot trailer that he ca