An image of a portrait underneath the Mona Lisa has been found beneath the 
existing painting using reflective light technology, according to a French scientist.
Pascal Cotte said he has spent more than 10 years using the technology to analyse the painting.
He claims the earlier portrait lies hidden underneath the surface of Leonardo's most celebrated artwork.
A reconstruction shows another image of a sitter looking off to the side.
The Louvre Museum has declined to comment on his claims because it "was not part of the scientific team".
