Three days later, bearing the tent he had said had been his home for five years, he appeared in east Berlin and spun the incredible story of life in the wilds. He had disposed of all his Dutch identity papers on the rail journey to the German capital.
As he spoke in broken English it was thought at first that he was from Britain. Linguistic experts established that the accent was fake but could not work out what his mother tongue was.
His DNA was shipped to 250 police agencies around the world but there was no match because he had no criminal record.
He had refused to allow a photograph of himself to be circulated but eventually agreed after being promised a German passport.