Real Madrid captain Sergio Ramos will be investigated over comments he made following his booking during Wednesday's Champions League win at Ajax, UEFA has announced.
Making his 600th appearance for the club in Wednesday's Champions League tie, Ramos was booked late in the game for a foul on Ajax striker Kasper Dolberg.
Madrid were leading 2-1 at the time of the yellow card being shown to Ramos, who will miss the second leg at the Santiago Bernabeu through suspension as a result.
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Ramos appeared to initially admit he deliberately earned the booking so he could serve the ban before the quarter-finals, should three-time defending champions Madrid progress.