(ALTOONA, Pa.) — Authorities say a pit bull has attacked and killed a 6-year-old boy in Pennsylvania. The Blair County coroner says the child died of blunt-force trauma from the dog attack that occurred just before 6 p.m. Thursday in Lakemont. Family friend Rick Vaughan, tells The Altoona Mirror the boy’s father heard the mother screaming and found the dog on top of the boy.