There are plenty of older documentaries, mostly mainstream posted on Youtube about this case. Here are a couple to view, one by an influencer, the other a mainstream media with interviews, dubbed in English.
The BELGIAN DEMON - Marc Dutroux
The Marc Dutroux Pedophile Ring: Government Officials, Murder & Satanic Sacrifices (VERY DISTURBING)
TLDR; notorious pedophile murderer Marc Dutroux claimed he actually worked for “certain people in the government” when procuring victims. It was never proven in court, but I’ll believe it.
Wait, was he a pedophile and a murderer, or a murderer who killed pedophiles?
Edit: Unfortunately, Wikipedia confirms the former.