Priem said she last saw Syler at around 12:30 a.m. on Sunday. He reportedly had been sleeping in a tent along with Priem, her mother, Nancy Collins, and Priem's 12-year-old daughter. Priem's 14-year-old son and his 14-year-old friend were sleeping in an adjacent tent. Priem said she discovered Syler missing at 1:45 a.m.
Yavapai County sheriff's spokesman Dwight D'Evelyn said approximately 25 campers were in the area when the toddler was reported missing. Syler was last seen by non-family campers around 9 p.m. on Saturday.
D'Evelyn said some of those campers assisted with the search and all cooperated with requests by deputies to check personal campsites and vehicles for Syler. Campers were required to register and reserve a campsite at the Beaver Creek Campground and detectives have obtained those records.
Detectives from the Criminal Investigations Bureau continue to examine property recovered from the campsite as well as the vehicles belonging to Priem and Collins.
Sheriff's deputies from Yavapai and Coconino counties as well as search and rescue personnel are conducting the massive search for Syler.
D'Evelyn said search supervisors are widening the scope of the search to make sure every opportunity to find Syler is explored. At least five search dogs will also be part of Tuesday's operation along with several ground teams.
Some of the water pools along the nearby creek can have a depth of 5 feet. Divers and swift water rescue teams continue to search those areas.
D'Evelyn said YCSO is handling the incident in a two-prong manner. He said the first priority is to find the boy and the second prong is comprised of an extensive investigation into his disappearance.
Polygraph examinations, which are typical procedural matters under these circumstances, were scheduled Monday. According to D'Evelyn, family members have been cooperative and involved in multiple interviews with detectives about the incident.
With assistance from FBI agents, Syler's biological mother was located and interviewed. She resides out of state. Detectives are still attempting to find legal process Priem initiated regarding her claim she was trying to adopt Syler.
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