AP Photo / Josh Reynolds, File
In this 2010 file photo, empty frames from which thieves took "Storm on the Sea of Galilee," left background, by Rembrandt and "The Concert," right foreground, by Vermeer, remain on display at the Isabella Stewart Gardner Museum in Boston.
BOSTON -- The FBI believes it knows the identities of the thieves who stole art valued at up to $500 million from Boston's Isabella Stewart Gardner Museum in 1990.
Richard DesLauriers, the FBI's special agent in charge in Boston, says the thieves belong to a criminal organization based in New England and the mid-Atlantic states. He says authorities believe the art was taken to Connecticut and the Philadelphia region in the years after the theft, and offered for sale in Philadelphia about a decade ago.