NBC said it is in negotiations with Brett and Hannah Anderson, the father and daughter who were caught up in a bizarre kidnapping and murder ordeal during the summer, to create “longform” non-fiction programming about the case.

Hannah Anderson, 16, was the subject of a multi-state manhunt in August after she was abducted by a family friend, James Lee DiMaggio Jr., who is suspected of killing her mother and younger brother near San Diego. DiMaggio was shot to death by FBI agents in a remote part of Idaho after he fled California with the girl. Anderson was released unharmed,

NBC News has already featured both Andersons in interviews broadcast on the “Today” show in August and October, and in a one-hour documentary on “Dateline NBC” in late August. They haven’t spoken to any other network, despite widespread media interest in the dramatic and lurid story.

An NBC representative said the Andersons were negotiating with Peacock Productions, an NBC subsidiary that produces non-fiction programs and specials for NBC and other networks. Among others, it produced “Barack Obama: Making History,” a one-hour special that aired last month on MSNBC hosted by Chris Matthews, and “Valerie’s Story,” a documentary about actress Valerie Harper’s battle with cancer that aired on NBC in September.