RALEIGH, N.C. (AP) — The Henderson County Sheriff's Office announced Thursday that no charges will be filed in the death of a 6-year-old boy mauled by a pit bull in western North Carolina.

The police investigation found the 1-year-old male pit bull was adopted from the Asheville Humane Society about three weeks before the attack. Authorities said the organization followed adoption procedures and the dog was current on its rabies and other recommended vaccinations.

Joshua Philip Strother apparently had climbed over a 4-foot chain-link fence to get into a neighbor's yard in Hendersonville, N.C. The pit bull was so aggressive that responding officers had to shoot it so emergency workers could get to the child, a sheriff's office spokesman said. Strother died at the scene from wounds to his head and neck, police said.