Authorities probe whether John Albert Gardner III was involved in Amber DuBois ' disappearance . `` We are involved in the daily briefings on the King investigation . '' John Albert Gardner III , a registered sex offender , has pleaded not guilty to killing Chelsea , 17 . Amber was last seen walking to school on February 13 , 2009 , less than 10 miles from Chelsea King 's school . Chelsea also last seen at school ; her car was found in park 17 .
Authorities probe whether John Albert Gardner III was involved in Amber DuBois ' disappearance . John Albert Gardner III , a registered sex offender , has pleaded not guilty to killing Chelsea , 17 . Amber was last seen walking to school on February 13 , 2009 , less than 10 miles from Chelsea King 's school . Chelsea also last seen at school ; her car was found in park 17 .