Hull said they were “appalled” after one of their players was the subject of alleged racist abuse during their 2-2 draw with Millwall at the Den.
Joe Bryan secured the Lions a point with a 54th-minute equaliser, but the Championship game was overshadowed by the incident, which led to a Millwall fan being arrested.
A statement from the Hull read: “Hull City are appalled to learn of an incident of alleged discriminatory abuse towards one of our players during Saturday’s Sky Bet Championship fixture against Millwall. A home supporter has been identified and arrested and we would like to thank Millwall for their swift actions.
“The welfare of our players and staff is of the upmost importance and we will work with the EFL, Millwall and the Metropolitan Police to investigate the matter further. We have a zero-tolerance position on discrimination and will continue to support those tackling abuse in all forms.”
The home club added: “Millwall Football Club regrets to confirm an incident of alleged discriminatory abuse during Saturday’s match against Hull City. The club is working with the Metropolitan police, its security staff, and Hull City as part of an ongoing investigation into the matter. A supporter has been arrested and will be subject to further police investigations.
“Millwall Football Club has a zero tolerance policy against discrimination of all kinds at the club and it will continue to work tirelessly to eradicate it from the sport.”