Millwall are set to face a Football Association charge after their supporters directed racist chanting at Tottenham forward Son Heung-Min.

The 3,689 travelling Millwall fans repeatedly yelled 'DVD' and 'three for a fiver' at the South Korean when he was in possession of the ball. The chants are considered racist when aimed at Asian footballers.

Millwall manager Neil Harris claimed he did not hear any of the abuse but said: 'As a club we don't condone that. We came here in the right spirit, to enjoy an FA Cup quarter-final, so if that's proven to have been to the detriment to the competition, I'm sure it will be left to the authorities. We just want people to enjoy the game.

Millwall are set to face a FA charge after their fans directed racist chanting at Son Heung-Min

'The focus comes away from what we've achieved in the competition. It's wrong in society, and it's wrong in football.'

Son responded on the pitch with a hat-trick in the 6-0 FA Cup thrashing to silence the chanting which could be heard throughout the first half.

Team-mate Kyle Walker appeared to respond to the abuse by gesticulating angrily at the away end from the bench following Son's first goal. Spurs manager Mauricio Pochettino said: 'I didn't hear. It's difficult for me.'

Son scored a hat-trick as Tottenham ran out 6-0 winners at White Hart Lane on Sunday

Millwall are still under investigation from the FA after previous-round opponents Leicester City complained of 'abuse, provocation and intimidation' of their staff, supporters and players.

To avert trouble, Spurs removed their name and logo from the advertising hoardings in front of Millwall's supporters in the upper tier to prevent a repeat of September 18 months previous when Arsenal supporters ripped them apart during a meeting. The stewards separating the home and away factions also wore neon orange hard hats.

An occasion that many feared would erupt into violence between supporters had proceeded in relative peace until the game began. There were a few skirmishes outside the stadium but a heavy police presence maintained control. But during the match they targeted Son with racist taunts.

Kyle Walker appeared to respond to the abuse by gesticulating angrily at the away end

A similar incident occurred at The Den in 2005 when Millwall supporters directed 'DVD' chants at Wolves forward Seol Ki-Hyeon. The South Korean struck the winner but team-mate Paul Ince branded Millwall's supporters racist afterwards.

'It was ironic that Seol should get the winner because he took stick all game,' a furious Ince said. 'The crowd were an absolute disgrace and some of the things that were said I couldn't repeat.

'I thought we'd got away from all those things and for it to happen to someone like Seol is a disgrace.

Millwall manager Neil Harris claimed he did not hear the abuse during the game

'But he responded in the right way by putting the ball in the back of the net and ramming the taunts down their throats. I'm not saying it was all the crowd, it was a small section who were giving him racial abuse.

'We've worked so hard to eradicate that from football, especially Millwall, who more than anyone are trying to get it right. To see what happened on Saturday is going back to the bad times and I wouldn't like to see it again.'

Millwall were also charged by the FA in 2004 over racism from their supporters when they made monkey chants at Liverpool's Djimi Taore.