UEFA has opened disciplinary proceedings against Paris St Germain President Nasser Al Khelaifi and sporting director Leonardo following Wednesday's 3-1 Champions League defeat by Real Madrid.
Spanish media reported that Al Khelaifi entered the match referee's dressing room shouting after the match, an incident recorded by a Real Madrid employee with a mobile phone.
"We confirm that a disciplinary case has been opened. The UEFA Control, Ethics and Disciplinary Body will take a decision in due course," European soccer's governing body told Reuters.
The French side dominated possession and led 1-0 until Karim Benzema equalised in the 61st minute, a goal PSG coach Mauricio Pochettino felt should have been disallowed because goalkeeper Gianluigi Donnarumma was fouled in the build-up.
PSG, who lost the last-16 tie 3-2 on aggregate, did not immediately respond to a request for comment.
READ MORE
Will Ancelotti restore hope to battered Brazil side?
So near and yet so far for Arsenal
PSG beat Arsenal on penalties to retain Champions League title