The router that handles Internet traffic for Banco Nacional failed Tuesday morning, and customers could not complete online transactions for six hours. Service finally was restored about 4 p.m.
A bank employee said that computers within banks were working normally and that urgent transactions could be completed if a customer wished to visit a local branch and conduct business through a live teller. Automatic tellers connected to the bank also functioned normally.
The outage took place the day after a legal holiday when many employees of various companies were returning after a three-day weekend.