Mikhail Panin's painting, called Secret Departure Of Ivan The Terrible Before The Oprichnina, was part of the permanent collection of the museum in Dnipro, U.S. attorney's office prosecutors said, according to Radio Free Europe.
An American couple inherited the painting when they bought a home in Ridgefield, Connecticut, in 1961 from a former member of the Swiss Army who had emigrated to the United States from Switzerland in 1946, according to officials.
Sixty-four exhibits, including the painting, disappeared from the museum when it was occupied by Nazi forces during World War II, said authorities.
The FBI seized the painting in 2017 when Ukrainian authorities demanded its return after seeing it placed for auction. U.S. officials say they will return it to the Ukrainian Embassy in Washington if no other claims are filed.
Click here to read the Radio Free Europe report.
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