Heart of Midlothian said it will ban any fans found guilty of racially abusing a Rangers player after Sunday’s Scottish Premiership match.
The club opened an investigation after allegations that the visitors’ Alfredo Morelos faced racial abuse during his celebration in front of home fans at Tynecastle.
Hearts said any fan found guilty would be not be able to purchase any further tickets for games.
A statement from Hearts read: “The club is aware of the incident in question and is currently investigating it.
“It goes without saying that Heart of Midlothian Football Club utterly condemns any form of racism and any individuals found guilty of such an offence will face an indefinite ban from Tynecastle Park.”
In a separate racially charged incident this weekend, an FA Cup qualifier between Haringey Borough and Yeovil Town on Saturday was abandoned after two men were arrested over alleged racial abuse of players.
The Press Association news agency reported that the Haringey manager, Tom Loizou, said his defender Coby Rowe was subjected to the abuse and his goalkeeper, Douglas Pajetat, was also said to have been spat at and had missiles thrown at him.
The FA said it was deeply concerned about the allegation and was looking into the incident “as a matter of urgency”.