The APS Mosta branch will be opening at 10am tomorrow following a small fire this morning, the bank said.
It is believed the fire started from the air conditioning system.
The bank thanked the Civil Protection Department and the police for their assistance.
It said customers can seek assistance from the Customer Support Centre on 2122 6644 from Mondays to Fridays from 8am to 7pm and on Saturdays from 8am to 12.30pm.