A couple from Switzerland had contacted police to come forward believing that van Helsum was their grandson and had DNA samples taken .
Police attempted to search for a grave with no success and van Helsum was unable to locate the forest he was living in .
A couple from Switzerland had contacted police to come forward believing that van Helsum was their Helsum and had DNA samples taken .
Police attempted to search for a grave with no success and van Helsum was unable to locate the forest he was living in .