Cristiano Ronaldo is facing a ban from UEFA after he allegedly shouted “son of a bit**” at Atletico Madrid Fans In the Champions League win.

Ronaldo bagged a hat-trick as Juve came from 2-0 down on aggregate to win 3-2 in Tuesday’s last-16 Champions League tie.

His third, from the penalty spot, came in the closing stages of the second leg and sparked wild celebrations among the Juventus players and fans.

And Ronaldo appeared to be venting plenty of frustrations at the away supporters, having previously played for their city rivals Real Madrid.

Ronaldo was picked up on Vamos de Movistar cameras, and Spanish lip-readers claim the 34-year-old was shouting “hijos de puta” (sons of b******).

The superstar could now face a ban fromUEFA, especially when paired with his celebration.

The Juve star grabbed his crotch, like Atletico boss Diego Simeone did after the first leg.

Ronaldo appeared to aim his gesture at the travelling Atletico fans, something the La Liga club are believed to not be best pleased with.

Simeone was fined 20,000 euros (£17,000) for his gesture for improper conduct.