POCATELLO, Idaho (AP) — Private investigators looking into the disappearance of a 2-year-old boy during a summer camping trip say he could have been accidentally or intentionally killed.

The firm hired by the family, Klein Investigations and Consulting, said Saturday that it ruled out forced abduction and a wild animal attack. The Idaho State Journal says investigators did not name potential suspects in DeOrr Kunz's death but asked for those with information to come forward. The boy was last seen on July 10 at his family's campsite at Timber Creek Campground, just south of the town of Leadore near the Montana border.

Despite numerous searches, no trace of Kunz has been found. Investigator Philip Klein says the firm couldn't rule out the boy was accidentally or intentionally killed. The boy's aunt, Tanisha O'Neal Tompkins, says the family was in shock and declined further comment.