In the early hours of the morning on October 16, 2012, thieves made away with seven paintings among a private collection owned by the Triton Foundation being exhibited at the Kunsthal museum in Rotterdam.  The New York Times reports that the seven borrowed paintings stolen early Tuesday morning include valuable works from famous artists such as Freud, Gauguin, Matisse, Monet, and Picasso. 

This week's art theft raises alarm regarding museum security in Europe, which is a prime target for art thieves.  The last recent significant art theft occured back in 2010 when five paintings, among which included a Picasso and a Matisse, collectively valued at about $130 million, were stolen from the Musée d'Art Moderne in Paris and remain missing.   

The stolen art work includes paintings from the 19th to the 21st centuries:  Meyer de Haan's "Self-Portrait" (1890); Gauguin's "Girl in Front of an Open Window" (1898); Monet's "Waterloo Bridge, London" (1901) and "Charing Cross Bridge, London," (1901); Matisse's "Reading Girl in White and Yellow" (1919); Picasso's "Harlequin Head" (1971); and Freud's "Woman With Eyes Closed" (2002).  

Kunsthal museum officials declined to estimate the value of the stolen paintings.  It is estimated by experts that the paintings are collectively worth "many millions of dollars, possibly hundreds of millions," according to the New York Times