The foundation has offered a million euros for the tip that leads to the solution of the case. Despite many tips from recent months in the Netherlands, Groen has still not been found.
The student disappeared almost thirty years ago after she left a Maastricht student association party on her bicycle. She has been missing since then.
On Thursday there will be a TV broadcast in Belgium about the disappearance. The foundation’s websites have also been translated into German and French.
