(FILES) In this file photo taken on October 16, 2012, an empty space is seen where a painting by French artist Henri Matisse was stolen at the Kunsthal museum in Rotterdam, a day after seven masterpieces were stolen in a pre-dawn heist. - One of seven paintings stolen six years ago from the museum in The Netherlands as part of a spectacular art heist may have been found in Romania, the public prosector in Bucharest said on November 18, 2018. Public prosecutor Augustin Lazar confirmed to AFP that Romanian authorities were in possession of a painting that "might be" one of those stolen from the Kunsthal Museum, adding it needs to be further examined. Sources told AFP that experts are checking if the canvas is Picasso's "Harlequin Head". (Photo by ROBIN UTRECHT / ANP / AFP)