HARRISBURG, Pa. - A gunman who killed five girls and wounded five others inside a one-room Amish schoolhouse, then killed himself, had no drugs in his system, a coroner said Friday. "The toxicology is negative across-the-board," said Lancaster Coroner Gary Kirchner, after reviewing the lab results with his office's forensic pathologist. "We expected this." The results were a dead end in the search for answers to what caused Charles Carl Roberts IV, a 32-year-old father of three with no prior criminal record, to attack the girls in a school about a mile from his home in rural Lancaster County on...