German police are still trying to figure out the identity of a teenager who walked into Berlin City Hall on September 5, claiming to have lived in a forest for five years.

According to German media reports, the 17-year-old boy calls himself Ray, speaks in English with only a few words of German, and knows nothing of his origins.

He is the latest in a long line of missing people with mysterious stories that have captured the imagination as Graham Satchell reports.