MADRID -- Spanish authorities say five members of an ultra group that supports Barcelona have been arrested in Madrid hours before the Copa del Rey final.

The government's delegation in Madrid says police have arrested members of the "Boixos Nois" ("Crazy Boys" in Catalan) ultra group after they robbed and trashed a small store in the capital.

Police are also looking for another 13 group members they suspect participated in the incident.

Barcelona defeated Alaves 3-1 in the final of the Copa del Rey at the Vicente Calderon, the final game at the stadium, later on Saturday.