About 150 federal agents have converged on Idaho's Frank Church River of No Return Wilderness in the search for 16-year-old Hannah Anderson and her suspected abductor, 40-year-old James Lee DiMaggio.
They arrived Saturday, joining roughly 100 law enforcement officers from the U.S. Marshal's Service, Idaho State Police, Valley and Ada County sheriff's offices, the San Diego Sheriff's Department and other agencies.
DiMaggio is suspected of killing Hannah's mother, 44-year-old Christina Anderson, and her 8-year-old brother Ethan Anderson, whose bodies were found Sunday night in DiMaggio's burning house in California near the Mexico border. DiMaggio's car was found parked at a trailhead near Cascade, Idaho, on Friday.
FBI special agent Jason Pack said the agency will work for as long as it takes to bring a resolution to the case.