Poland said on Friday it was almost certain it had located a Nazi train rumored to have gone missing near the close of World War Two loaded with guns and jewels.
Photographs taken using ground-penetrating radar equipment showed a train more than 100 meters (330 feet) long, the first official confirmation of its existence, Deputy Culture Minister Piotr Zuchowski said.
The vehicle was armored, suggesting it was carrying a special cargo, "probably military equipment but also possibly jewelry, works of art and archive documents," he told journalists in Warsaw.
"I am over 99 percent sure that such a train exists," he said, though experts would only be certain once they managed to uncover the vehicle.
In reaction to the finding, the World Jewish Congress said on Friday that any valuables found on the train must be returned to their rightful owners.
"To the extent that any items now being discovered in Poland may have been stolen from Jews before they were sent to death ... it is essential that every measure is taken to return the property to its rightful owners or to their heirs," WJC head Robert Singer said in a statement issued in New York.