TOKYO: Russia has released a Japanese citizen detained on a disputed island claimed by both countries, Tokyo’s foreign ministry said on Thursday, ahead of diplomatic talks on the long-running territorial dispute. Tokyo and Moscow are working to resolve decades of tensions over four islands occupied by the Soviet Union in the closing days of World War II and now controlled by Russia. The unidentified man was visiting Kunashir – one of the islands off northern Japan – as part of a visa-free visit programme that started in 1992. He was detained by Russian customs ahead of his scheduled departure and accused of trying to take cash off the island illegally – a Japanese ministry official said. The Russian customs service said on its website they found some four million Japanese yen ($40,000) in his bags, while only $10,000 can be taken out of the country undeclared. The man had claimed that he was asked by a local resident to carry a package but was unaware it was cash, the official said. “After questioning, he was found innocent,” an official said on customary condition of anonymity, adding he was released on Wednesday. “We understand the Russian authorities have accepted his claim,” he added. The Japanese government – which had lodged a diplomatic protest – is arranging for the man to return to Nemuro port on the country’s northern main island of Hokkaido on Monday, sources said. The dispute over the islands – known in Japan as the Northern Territories and in Russia as part of the Kuril Islands – has prevented the two countries from signing a peace treaty to formally end wartime hostilities. Japanese Prime Minister Shinzo Abe and Russian President Vladimir Putin agreed in May to rekindle talks aimed at resolving the territorial dispute. On Friday in Moscow, Japan and Russia are scheduled to hold their second round of talks on the issue since the May summit. Japanese media speculated that the man’s quick release came as the Russian side possibly tried to limit the diplomatic impact of the case.