Securitity Quad News Today

Without supervision. hes not supposed to be walk out the door and youre not stopping him. >> reporter: new york city police commissioner ray kelly does not believe the securitity quad is at fault. >> we see him on film and statements by the security agent and other people that we believe that it wasnt any wrongdoing on her part. >> reporter: a source close to the investigation tells cnn searches are concentrating on a five-block area around the school with particular focus on a marshy landfill c...