WJLA ABC World News With Diane Sawyer August 1, 2012
good evening, we begin tonight with exclusive new reporting about the suspected shooter in the aurora, colorado movie theater. a new investigation, raising questions about warning signs and whether the university attended by the suspect could have or should have taken action. abc's mark greenblatt is in colorado with details of the new reporting by abc news and our denver affiliate kmgh. good evening, mark. >> reporter: good evening, diane. for weeks the world heads focused its attention to james holmes and the world's biggest mass shooting in u.s. history. however, tonight we're lea...
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