FOOTBALL League chairman Greg Clarke has defended Millwall's anti-racism track record after a Sky Sports News investigation unearthed abuse at The Den.
Undercover footage filmed at the Lions' home match against Leeds United in November showed an individual shouting racist jibes at striker El Hadji Diouf.
Millwall released a statement on Monday confirming they would launch an immediate investigation and the Metropolitan Police have stated they are aware of the footage.
Clarke, who was at the game in question in addition to the Lions' recent home match against Hull City, said he did not hear any racist abuse at the time.
He added: "We have to use every tool in our armour, be it CCTV, steward and player statements, to hunt down every racist at every football ground and make sure they never get in again.
"The club has worked very hard, and spent a lot of money, reaching out to people to improve them. Persecuting the club rather than the perpetrators is the wrong answer."