The government is still struggling to decide which ministry or agency will deal with issues linked to the recent bankruptcy of Tokyo-based major bitcoin exchange Mt. Gox, Finance Minister Taro Aso said Tuesday.

His remarks came as Friday's collapse of Mt. Gox, once the world's leading exchange for the virtual currency, stirs up repercussions such as a damages suit filed against the bourse by a user in the United States with a federal district court.

"We don't know whether (the economic failure of Mt. Gox is) a crime or a simple bankruptcy, and we don't know which ministry or agency will oversee the case," Aso, also the financial services minister, said at a press conference. "Related ministries and agencies are making efforts to study" the matter, he added.