Gerard Pique was attacked by Spain fans during the nation's open training session, who jeered, whistled and insulted him.
"Pique, bastard, Spain is your nation," they chanted at the Catalan defender.
Sale Piqué pic.twitter.com/F61hBh1mYk— Eduardo J. Castelao (@EJCASTELAO) 2 de octubre de 2017
Pique had criticised the Spanish police for their heavy handed treatment of Catalans trying to vote during the referendum on Sunday.
Just 23 minutes of work
Tras 23 minutos España deja de entrenar pic.twitter.com/LjD3Jvjx81— Eduardo J. Castelao (@EJCASTELAO) 2 de octubre de 2017
Julen Lopetegui decided to call an end to the session after just 23 minutes.