Mizuho Financial Group Inc. said Monday the hardware that failed and caused a delay in foreign currency-denominated remittances in mid-March was provided by Hitachi Ltd., as it seeks to get to the bottom of one of the four system glitches in just two weeks.

Speaking at a news conference, Mizuho Financial Group President and Group CEO Tatsufumi Sakai said the primary responsibility lies with the group for the system failures, including the March 11 to 12 incident involving Hitachi's hardware. He sought cooperation from the industrial conglomerate in preventing a recurrence.

Asked about the possibility of Mizuho seeking damages from Hitachi, Sakai only said his company will deal with the issue appropriately in line with the contract.