Art Heist Mystery
FILE - In this Thursday, March 11, 2010 file photo, empty frames from which thieves took "Storm on the Sea of Galilee," left background, by Rembrandt... FILE - In this Thursday, March 11, 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. The paintings are among 13 works stolen by burglars from the museum in the early hours of March 18, 1990. The FBI said Monday, March 18, 2013, it believes it knows the identities of the thieves who stole the art. Richard DesLauriers, the FBI's special agent in charge in Boston, says the thieves belong to a criminal organization based in New England the mid-Atlantic states. (AP Photo/Josh Reynolds, File)
Art Heist Mystery
FILE - In this March 21, 1990 file photo, a security guard stands outside the Dutch Room of the Isabella Stewart Gardner Museum in Boston, where robb... FILE - In this March 21, 1990 file photo, a security guard stands outside the Dutch Room of the Isabella Stewart Gardner Museum in Boston, where robbers stole more than a dozen works of art by Rembrandt, Vermeer, Degas, Manet and others, in an early morning robbery March 18, 1990. The FBI said Monday, March 18, 2013, it believes it knows the identities of the thieves who stole the art. Richard DesLauriers, the FBI's special agent in charge in Boston, says the thieves belong to a criminal organization based in New England the mid-Atlantic states. (AP Photo, File)
Art Heist Mystery
FILE - This undated file photograph released by the Isabella Stewart Gardner Museum shows the etching "Self-Portrait," by Rembrandt, one of more than... FILE - This undated file photograph released by the Isabella Stewart Gardner Museum shows the etching "Self-Portrait," by Rembrandt, one of more than a dozen works of art stolen by burglars in the early hours of March 18, 1990.The FBI said Monday, March 18, 2013, it believes it knows the identities of the thieves who stole the art. Richard DesLauriers, the FBI's special agent in charge in Boston, says the thieves belong to a criminal organization based in New England the mid-Atlantic states. (AP Photo/Isabella Stewart Gardner Museum, File) NO SALES
Art Heist Mystery
FILE - In this Thursday, March 11, 2010 file photo, a plaque marks the empty frame from which thieves cut Rembrandt's "The Storm on the Sea of Galile... FILE - In this Thursday, March 11, 2010 file photo, a plaque marks the empty frame from which thieves cut Rembrandt's "The Storm on the Sea of Galilee," which remains on display at the Isabella Stewart Gardner Museum in Boston. It is one of 13 works stolen by burglars from the museum in the early hours of March 18, 1990.The FBI said Monday, March 18, 2013, it believes it knows the identities of the thieves who stole the art. Richard DesLauriers, the FBI's special agent in charge in Boston, says the thieves belong to a criminal organization based in New England the mid-Atlantic states. (AP Photo/Josh Reynolds, File)
Art Heist Mystery
FILE - This undated file photograph released by the Isabella Stewart Gardner Museum shows the painting "Chez Tortoni," by Manet, one of more than a ... FILE - This undated file photograph released by the Isabella Stewart Gardner Museum shows the painting "Chez Tortoni," by Manet, one of more than a dozen works of art stolen in the early hours of March 18, 1990. The FBI said Monday, March 18, 2013, it believes they know the identities of the thieves, belonging to a criminal organization based in New England the mid-Atlantic states. (AP Photo/Isabella Stewart Gardner Museum, File) NO SALES
Art Heist Mystery
FILE - This undated file photograph released by the Isabella Stewart Gardner Museum shows the painting "The Storm on the Sea of Galilee," by Rembrand... FILE - This undated file photograph released by the Isabella Stewart Gardner Museum shows the painting "The Storm on the Sea of Galilee," by Rembrandt, one of more than a dozen works of art stolen by burglars in the early hours of March 18, 1990. The FBI said Monday, March 18, 2013, it believes it knows the identities of the thieves who stole the art. Richard DesLauriers, the FBI's special agent in charge in Boston, says the thieves belong to a criminal organization based in New England the mid-Atlantic states. (AP Photo/Isabella Stewart Gardner Museum, File) NO SALES
Art Heist Mystery
Anthony Amore, chief of security at the Gardner Museum, center, stands next to a poster that shows an image of a Vermeer painting and lists a reward,... Anthony Amore, chief of security at the Gardner Museum, center, stands next to a poster that shows an image of a Vermeer painting and lists a reward, right, while facing reporters during a news conference at FBI headquarters in Boston, Monday, March 18, 2013. 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 more than two decades ago. (AP Photo/Steven Senne)
Art Heist Mystery
In this Monday, March 18, 2013 copy photo of a poster provided by the FBI, a likeness of the stolen Vermeer painting The Concert is seen at FBI headq... In this Monday, March 18, 2013 copy photo of a poster provided by the FBI, a likeness of the stolen Vermeer painting The Concert is seen at FBI headquarters in 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 more than two decades ago. (AP Photo/FBI)
Art Heist Mystery
Federal Bureau of Investigation (FBI) Special Agent in Charge Richard DesLauriers, right, stands next to a poster that shows a Rembrandt painting and... Federal Bureau of Investigation (FBI) Special Agent in Charge Richard DesLauriers, right, stands next to a poster that shows a Rembrandt painting and a reward while facing reporters during a news conference at FBI headquarters in Boston, Monday, March 18, 2013. 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 more than two decades ago. DesLauriers says the thieves belong to a criminal organization based in New England and the mid-Atlantic states. (AP Photo/Steven Senne)
Art Heist Mystery
In this Monday, March 18, 2013 copy photo of a poster provided by the FBI, a likeness of the stolen Rembrandt painting The Storm on the Sea of Galile... In this Monday, March 18, 2013 copy photo of a poster provided by the FBI, a likeness of the stolen Rembrandt painting The Storm on the Sea of Galilee is seen at FBI headquarters in 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 more than two decades ago. (AP Photo/FBI)
Art Heist Mystery
Federal Bureau of Investigation (FBI) Special Agent Geoff Kelly, center, looks in the direction of a poster that shows a Vermeer painting and lists a... Federal Bureau of Investigation (FBI) Special Agent Geoff Kelly, center, looks in the direction of a poster that shows a Vermeer painting and lists a reward, right, after taking questions from reporters during a news conference at FBI headquarters in Boston, Monday, March 18, 2013. 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 more than two decades ago. (AP Photo/Steven Senne)
Art theft experts say now that authorities believe they know who stole $500 million worth of art from a U.S. museum, the chances of getting the paintings back are good.
The FBI won't disclose the identities of whom it thinks posed as police officers and stole 13 pieces from a Boston museum in 1990. The works included paintings by Rembrandt, Vermeer and Manet.
Christopher Marinello is a lawyer who recently recovered a Matisse painting stolen from a museum in Stockholm in 1987. He says 23 years is not an unusually long period of time when it comes to recovering stolen art.
Marinello says he believes someone will expose someone else to claim the $5 million reward being offered by the museum.
