The FA has launched an investigation into alleged racist chanting during Millwall's FA Cup victory over Everton.

Millwall's dramatic 3-2 win was marred by crowd trouble outside the ground and videos have now emerged which appear to show some home fans singing racist chants during the match.

A spokesperson for the FA told Press Association Sport the governing body was aware of the incident and was investigating.

Anti-discrimination group Kick It Out condemned the chants and called for action to be taken.

"The racist chanting heard from some Millwall supporters during yesterday's match is disgusting and typical of mass discriminatory chants that continue to go unpunished," a statement said.

"We reiterate our message: racial hatred - and all forms of discrimination - have no place in society, especially not in 2019. There is no reason why a footballing environment should be the exception to this rule.

"Kick It Out wants to see the relevant authorities take swift, firm and decisive action against the perpetrators."

A spokesman for Millwall has said: "The club will, as is commonplace following such incidents, work with all relevant authorities during investigations into the matter and look to identify individuals involved.

"Anyone identified and guilty of such abuse will be banned from The Den for life.

"The club would like to place on record its gratitude to, and pride in, the vast majority of its supporters who gave their team outstanding backing throughout the match and who deserve to enjoy a memorable victory. They should be able to do so without being tarnished by behaviour they would find abhorrent.

"Millwall Football Club has a long and proud record of anti-discrimination work and on top of this investigation will continue to work tirelessly, alongside the authorities, to eradicate all forms from the game."

Prior to the match at The Den, a man suffered a slash wound to the face during clashes in Southwark, with the Metropolitan Police saying they believed the fight was between Millwall and Everton fans.

Video posted on social media shows police attempting to separate two large groups as punches were thrown.

WATCH BELOW - PLEASE BE AWARE THAT THIS IS VERY SENSITIVE MATERIAL AND MIGHT OFFEND DUE TO DISGUSTING LANGUAGE.