In the months before Timothy McVeigh's execution, FBI supervisors knew the agency hadn't turned over dozens of documents to McVeigh's lawyers, yet failed to notify FBI headquarters or federal prosecutors, the Justice Department said in a highly critical report released Tuesday. The report also said agents "purposefully" refused to send information to the Oklahoma City Bombing Task Force, despite repeated requests, and even destroyed investigative files on the bombing probe. McVeigh was convicted of blowing up the Alfred P. Murrah Building in Oklahoma City on April 19, 1995, a blast that killed 168 and injured hundreds more. He was executed...