Officials say John Albert Gardner III followed girl , 11 , but was scared off . Gardner admitted killing Chelsea King , 17 , and Amber Dubois , 14 . He is charged with two counts of murder in the first degree. Probation report reveals details of earlier sexual assault of teenage neighbor .
Officials say John Albert Gardner III followed girl , 11 , but was scared off . Gardner admitted killing Chelsea King , 17 , and Amber Dubois , 14 . Jogger who was attacked also identified Gardner , documents show . Probation report reveals details of earlier sexual assault of teenage neighbor .