A spectator suspected of throwing a banana at Barcelona full-back Dani Alves has been arrested.

Spanish police have not given any further details.

The incident occurred during Barcelona's 3 - 2 win at Villarreal.

The Brazilian's reaction, which saw him eat the banana and throw it away before continuing to play, has been widely praised.

FIFA president Sepp Blatter called the incident "an outrage" and said they will take a zero tolerance approach to discrimination at the World Cup.