FILE - This undated file booking photo provided by the Will County 

FILE - This undated file booking photo provided by the Will County Sheriff's Office in Joliet, Ill., shows Christopher Vaughn, of Oswego, Ill. A judge in Joliet, Ill., on Tuesday, Nov. 27, 2012, sentenced Vaughn to life in prison for the June 2007 killing of his wife Kimberly Vaughn, 34 and three children, 12-year-old Abigayle, 11-year-old Cassandra and 8-year-old Blake in the family's SUV as they drove to a waterpark. (AP Photo/Will County Sheriff's Office, File)
Associated Press
FILE - This undated file booking photo provided by the Will County Sheriff's Office in Joliet, Ill., shows Christopher Vaughn, of Oswego, Ill. A judge in Joliet, Ill., on Tuesday, Nov. 27, 2012, sentenced Vaughn to life in prison for the June 2007 killing of his wife Kimberly Vaughn, 34 and three children, 12-year-old Abigayle, 11-year-old Cassandra and 8-year-old Blake in the family's SUV as they drove to a waterpark. (AP Photo/Will County Sheriff's Office, File)
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