Cristiano Ronaldo has been accused of making an insulting gesture in a video released on social media.
Veteran forward Ronaldo played the full 90 minutes as his Al-Nassr side lost 2-0 against Al-Hilal on Tuesday.
The result sees Dinko Jelicic's side concede further ground in the title race, with second-placed Al-Nassr now three points behind leaders Al-Ittihad, having played a game more, with Al-Shabab in third three points behind them with a game in hand.
Superstar Ronaldo, 37, was furious as he stormed off the pitch - and footage online seems to show him grabbing his crotch in response to fans chanting the name of his rival Lionel Messi.