The thing is that half of the footage is fake, the other half is news footage and a tiny portion may be from crime scenes. It was like the Italian cannibal movie, painfully fake yet still causes investigations in the US.
Cannibal Holocaust. Making a horror movie that realistic without all the special effects,CGI, and studios that hollyweird has at hand now is a lost art. The director was actually arrested and investigated for murder for that one.