Cristiano Ronaldo faces investigation for crude Messi chant reaction

Cristiano Ronaldo appeared to make an obscene gesture in response to "Messi" chants following the end of Al Nassr's 3-2 win over Al Shabab in the Saudi Pro League on Sunday.

The Portugal forward opened the scoring with a 21st-minute penalty but Al Nassr needed a late goal from Brazilian Talisca, who struck twice, to settle the game with four minutes left.

But after the final whistle, social media videos captured Ronaldo appearing to make a lewd gesture towards the crowd. 

In the background, chants of "Messi" could be heard, referencing Ronaldo's long-term football rival from Argentina.

The incident was not caught on television cameras, but some Saudi pundits said Ronaldo should be sanctioned.

There has been no official response but Saudi newspaper 

Asharq al-Awsat reported the National Football Federation (SAFF) had opened an investigation into the incident.