The Tokyo Metropolitan Government started on-site emergency inspections Tuesday at Mizuho Bank's headquarters in Chiyoda Ward, four key branches and the bank's civil service business center to look into the computer fiasco that occurred with their April 1 launch under Mizuho Holdings Inc.

The inspections of the key locations, which the metropolitan government designated to handle its official funds, followed a series of computer problems that affected money transfers and automated teller machine operations at Mizuho Holdings' banks starting on April 1, and then again Monday.

On Monday, Mizuho Corporate Bank failed to process 65 transfer orders worth 97 million yen as a result of a computer problem.