Police and justice are investigating the possible involvement of serial killer Marc Dutroux in the disappearance of Tanja Groen. The Dutch student disappeared in 1993 in Maastricht, not far from the border with Belgium. Before his death, the Dutch crime reporter Peter R. de Vries collected 1 million euros through crowdfunding for those who could give the golden tip, but for the time being without result.
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Police investigate link between Dutroux and Dutch student Tanja Groen who disappeared 29 years ago
