A man has been arrested for writing on a famous painting in the Tate Modern gallery in London.
Vladimir Umanets has admitted writing his name and a message on the corner of the Mark Rothko painting. But he told the BBC: "I'm not a vandal."
The picture, called Black On Maroon, was hanging in the Tate Modern gallery in London, when people in the gallery spotted a man writing on the corner.
People who run the gallery hope that the writing can be removed, as the painting is very valuable.