The arrested men, aged between 31 and 43, belonging to the “Black Panthers” fan club, had travelled to the Azores a few days before a game between local side Santa Clara and Boavista football club on Saturday, according to a statement from the PSP.

The suspects “provoked disputes and violent physical assaults on five restaurant employees”, the PSP said, as well as causing material damage in the establishment.

According to the PSP, on Monday it was not possible to locate and arrest the five suspects. Four of them were prevented from leaving Ponta Delgada airport and another was prevented from leaving the Terceira island airport.

Santa Clara won Saturday's match against Boavista 4-2.