The RFEF have threatened sanctions if the Clasico is interrupted by trouble on December 18. They put out a statement on Wednesday.
"In relation to the game on December 18 at the Camp Nou between Barcelona and Real Madrid, the RFEF states that, exactly as in all meetings of official competitions and being a public event, it does not hold responsibility in security matters," it read.
"The RFEF will apply the regulations in force both before and during and after the game if there are situations of force majeure or circumstances in which the application of sports discipline is necessary.
"Similarly, as usual, the RFEF is in contact with the security forces to coordinate the arrival of the refereeing team at the Camp Nou facilities according to established protocols."