WARSAW - Poland's central bank governor Marek Belka said on Wednesday that the story of an alleged finding of a Nazi train in Poland that could contain jewels was in his opinion a hoax.Asked if potentially the gold found in the train could add to the bank's reserves, Belka said: "I think nobody (at the central bank) even thought to devote a second to this issue. This is some hoax."Poland's Deputy Culture Minister said last week he was almost certain Poland 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," though experts would only be certain once they managed to uncover the vehicle, Zuchowski added.Authorities started looking for the train this month, tipped off by a German and a Pole who said through lawyers that they had found it in the southwestern district of Walbrzych and expected 10 percent of the value of the findings as a reward.