UEFA have begun a disciplinary process against Spain striker, Álvaro Morata and team-mate Rodri for singing about a sovereignty claim on Gibraltar.
Morata and Rodri chanted the song during La Roja’s European Championship title celebration.
UEFA, in a statement on Friday, said a disciplinary inspector “is being appointed to evaluate a potential violation” of its rules by the two players.
Morata and Rodri led a huge crowd in singing “Gibraltar is Spanish” on Monday.
The celebrations took place a day after Spain’s 2-1 win over England in the Euro 2024 final.
Gibraltar on the southern tip of Spain has been a British overseas territory for more than 300 years.
The Gibraltar football federation filed a formal complaint to UEFA on Thursday.