TOKYO:-   Bitcoin and other digital currency worth around 6.7 billion yen ($60 million) has been stolen in Japan following a hacking attack, a virtual exchange operator said on Thursday. Osaka-based Tech Bureau, which operates virtual currency exchange Zaif, said its server had been illegally accessed and money transfered. “We decline to comment on the details of how this illegal access occurred, as it is a crime and we’ve already asked the authorities to investigate,” Tech Bureau said in a statement. It added that the virtual currencies stolen were bitcoin, bitcoin cash and monacoin. “We will prepare measures so that customers’ assets will not be affected” by the hack, it said, adding it would receive financial support from major shareholder Fisco Group.–AFP