The Fc Porto forward was restrained by teammates and opponents on the field as they tried in vain to keep him on the pitch, before Marega eventually forced his way down the tunnel

Moussa Marega substituted himself after receiving alleged racist abuse (Image: AFP via Getty Images).

Porto star Moussa Marega substituted himself out of his side's match with Vitoria after allegedly being racially abused by the crowd.

The Malian international stormed off the pitch to a loud chorus of boos in the Estadio D. Afonso Henriques stadium, 12 minutes after he had given Porto the lead.

Teammates pleaded with Marega to stay on the field, and even restrained him to try and persuade him otherwise.

But even the efforts of Porto boss Sergio Conceicao could not convince the striker to continue playing as he swore at fans in the stands on his way down the runnel.

Marega, 28, posted an image of himself sticking his fingers up at supporters on his Instagram account, and hit out at the alleged offenders.

"To those idiots that go to the stadium to shout racist insults, go f*** yourselves," Marega said.

"I'm also grateful to the ref for not defending me and for giving me a yellow card for defending my skin colour.

"I hope I never see you on a pitch again. You're a disgrace."

Members of the Vitoria side had even attempted to keep Marega on the pitch.

As he walked off he put his thumbs down to the jeering supporters, as teammate Otavio tried to stop him, rather than support him.

Eventually after a few minutes remonstrating, Marega was replaced by Wilson Manafa.

Marega's goal after 60 minutes had put Porto 2-1 ahead, and the 28-year-old reportedly celebrated by pointing to his skin in response to jibes from the home support.

That reaction earned him a yellow card from referee Luis Godinho, before the unsavoury scenes involving his fellow players which followed soon after.

Marega pointed to his skin after scoring in response to abuse from home fans (Image: Global Media Group/Sipa USA)

Despite attempting to keep his player on the field, Conceicao said after the match: “We are completely indignant.

“They insulted Marega since the warm up. We are all a family here, regardless of our nationality, skin colour, height or the colour of our hair and we all deserve respect. What happened here is outrageous.

“I know the fans here are very passionate about their club and many fans are not represented by some of the people who were in the crowd today.”

Porto’s director of communications Francisco Marques added on Twitter: “Marega was fed up and left the pitch and Porto was forced to make a substitution due to racism.”

Vitoria coach Ivo Vieira said: “I prefer not to speak about a situation without being aware of all the facts. But if the player was provoked, then he should not have been."