SACRAMENTO (AP) — Federal prosecutors claim a magistrate judge's ruling that the National Park Service purposely destroyed evidence in the wrongful death case of a 9-year-old boy who was crushed by a retaining wall in Northern California was based on findings that were "patently untrue." The Redding Record Searchlight reports Assistant U.S. Attorney J. Earlene Gordon said in documents filed Wednesday that Judge Gregory Hollows' findings were based on pure speculation. Hollows ruled last month that Park Service officials intentionally demolished the rock wall in Lassen Volcanic National Park before investigators could examine it.