Resona Holdings Inc. said Tuesday that Resona Bank, the Resona group's core banking unit, duplicated withdrawals of fees for electronic and other accounts aimed mainly at corporate customers.

Resona said 2,149 accounts were hit by what it termed "an error in in-house work," which occurred when the bank withdrew the fees Tuesday morning after operations Monday night were unable to confirm withdrawals from the accounts.

Resona said it completed correction work by 9:40 a.m.

The electronic banking service enables customers to deposit money and check their balances using personal computers.

Osaka-based Resona Bank, along with Saitama Resona Bank, operate as wholly owned subsidiaries of Resona Holdings, following the integration of the operations of Daiwa Bank and Asahi Bank.

The two banks kicked off operations for borrowers and depositors March 3.

On March 4, Resona Holdings said there were 536 cases of double withdrawals from customer accounts at Saitama Resona Bank in connection with parking fees and some other monthly payments.