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Police officers guard a cordoned off area at the rear side of the Kunsthal museum in Rotterdam, Tuesday Oct. 16, 2012. Several paintings have been stolen from a museum in the Dutch city of Rotterdam that was exhibiting works by Pablo Picasso, Henri Matisse and Vincent van Gogh. At least several paintings were stolen early Tuesday morning from the Kunsthal museum , but their names have not yet been released. They are believed to include at least one by Henri Matisse, the 1919 "Reading Girl." (AP Photo/Peter Dejong)

Police officers guard a cordoned off area at the rear side of the Kunsthal museum in Rotterdam, Tuesday Oct. 16, 2012. Several paintings have been stolen from a museum in the Dutch city of Rotterdam that was exhibiting works by Pablo Picasso, Henri Matisse and Vincent van Gogh. At least several paintings were stolen early Tuesday morning from the Kunsthal museum , but their names have not yet been released. They are believed to include at least one by Henri Matisse, the 1919 "Reading Girl." (AP Photo/Peter Dejong)

Big art heist at Dutch museum

Dutch police said Wednesday they had no suspects in the case, the

largest art heist in the country for more than a decade, though an

appeal to witnesses had produced more than a dozen tips for

investigators to follow up.