Millwall is working with Metropolitan Police to identify a supporter after a Derby player suffered alleged discriminatory abuse at The Den on Saturday.
Derby said the incident was reported later the game ended 1-1.
A statement from Millwall after the game read: “The matter is under immediate investigation and the club will fully cooperate on the matter.
“Any individual found guilty of discriminatory abuse at The Den is issued an immediate lifetime ban and is also offered the opportunity to complete Millwall’s Fan Diversity Scheme course.
“The club has a zero tolerance policy against discriminatory abuse of any kind and is continuing its tireless efforts in this regard through the work of the Millwall Equality Steering Committee.”
A Derby statement added: “The player will receive the full support of the club following the incident at The Den.
“Derby County would like to record their thanks to Millwall Football Club for their assistance.”
The match ended in a draw after former Derby player Scott Malone scored for Millwall and nullified Festy Ebosele’s lead.
The Rams held out for one point after Nathan Byrne was sent off in the second half, but remain last in the league and nine points from salvation after their 12-point deduction at the start of the season.
Millwall are ninth, one point out of the play-offs.
Hate will not win
Sky Sports is committed to making skysports.com and our channels on social media platforms a place for comment and debate free of abuse, hatred and vulgarity.
For more information please visit: www.skysports.com/againstonlinehate
If you see an answer to Sky Sports posts and / or content with an expression of hate based on the expression of hate based on race, sex, color, gender, nationality, ethnicity, disability, religion, sexuality, age or class, please copy the URL to the hateful send Other catch it and send us an email here.
Kick It Out By Denouncing Racism
Kick It Out is the football organization for equality and inclusion, working in the fields of football, education and the community to combat discrimination, encourage inclusive practices and promote positive change.