"The two clubs remain determined to do everything in their power to ensure that racist behaviour will not be tolerated.
"We will be speaking to the police and the match officials on this matter but no further comment will be made until this process has been completed and the investigations have been concluded."
More top news
Victoria Wood's brother has launched a crowdfunding appeal to pay for a statue of the late comedian in Bury.
'Paul Worthington should be allowed to be a witness via a videolink at the fresh inquest into the death of his daughter'.
The local MP and leader of the Liberal Democrats says it was a "joyful" day for locals and former locals alike.