Jan. 11 (UPI) -- The Isabella Stewart Gardner Museum in Boston said it will extend its $10 million reward for information on what it calls the "biggest unsolved art theft in world history."
In the early morning hours March 18, 1990, two thieves disguised as police officers made their way into the Gardner museum, handcuffed a security guard and walked away with 13 paintings by some of the world's most famous artists, including Rembrandt Harmenszoon van Rijn, Edgar Degas and Edouard Manet. The total value of the illicit haul is estimated to be more than $500 million.