Well that didn't take very long: Police in Berlin have solved the mystery of the so-called "Forest Boy" just days after releasing a photo of his face to the public.

For the first time since he arrived in Berlin last September claiming he had been living in the woods with his father for five years but doesn't remember anything else, the mysterious "Forest Boy" has allowed police to release a photo of his face in the hopes that someone will come forward and provide new insight into his identity.

An elderly Swiss couple who saw a picture of the "forest boy" who wandered out of the woods and into Berlin's City Hall claim to be his grandparents, and have submitted to a DNA test to prove it.

A mysterious "forest boy" presented himself at Berlin City Hall two weeks ago. The first words he spoke were English: "I'm alone in the world. I don't know who I am. Please help me." He is believed to be 17, and to have spent the last five years sleeping on the ground in a forest. His identity is a mystery.