Technical problems meant it was not possible to make payments, withdrawals, nor used the MB Way payment system.
An official source from national Interbank Services company SIBS, told news site Diário de Noticias that the problem was due to “technical issues” which had been identified and the necessary measures employed to solve them.
The first glitches were noted at around 10pm, and resolved by 11.30pm, according to SIBS.