"Satisfy the petition of the investigation of the election of Calvi preventive measures in the form of detention," - said the judge.
It clarifies RIA Novosti, Calvi arrested for two months, until April 13.
Earlier it was reported that Calvi denies any involvement in the theft.
February 15 became aware of the detention of Calvi and five other people. They are suspected of embezzling 2.5 billion rubles.