Thursday, April 24 11:42:04
Ulster Bank today said it is working on another technical glitch that saw some people who used their ATMs being debited twice for the transaction.
In 2012, a serious computer failure at the bank's parent company, RBS, caused widespread chaos for many customers who were unable to access their funds.
Ulster Bank said it was aware of the issue, which began on Easter Monday.
It said it was working to restore money to the accounts by Thursday night.
"Customers will not be left out of pocket as a result and can contact us if they require further assistance," a spokesperson said.
Ulster Bank is the largest bank in the North and the third biggest in the South.
It reported losses of £1bn in 2012, and £1.5bn last year.