Bradford City are investigating reports of alleged racist abuse towards local residents during Saturday's home match against AFC Wimbledon.
It is believed that nearby residents of Valley Parade were subjected to abuse by some fans attending the fixture on the final day of the League One season.
Wimbledon guaranteed their survival in the division with a 0-0 draw against the Bantams, who will be playing in League Two next season after already being relegated from England's third tier.
Bradford said they are working with West Yorkshire Police to investigate the claims and confirmed that “those involved can expect to face serious punishment and a lifetime ban from attending Bradford City fixtures."
A club statement read: "In conjunction with West Yorkshire Police we have launched a full investigation after receiving reports of racist abuse directed towards local residents, who live nearby the Northern Commercials Stadium on Saturday.
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"Racism has no place in society and we condemn any kind of hatred.
"The club treats all forms of discrimination with the utmost seriousness and we will be working with the authorities to identify those believed to be responsible of the alleged offence.
"Club staff will visit the families affected over the coming days and we will be assisting West Yorkshire Police with their enquiries.
“We would like to take this opportunity to thank supporters and other eye witnesses who have come forward with information in relation to this incident."
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At the start of April, the club investigated racist messages sent to Charlton's Lyle Taylor from a Twitter user with the handle 'Bantams Real Talk'.
Taylor was sent a number of banana emojis from the account, which was later deleted, after the striker scored the decisive goal in Charlton's 1-0 win against Bradford on March 30.
The 29-year-old highlighted the tweets on his own account as "yet another example of ignorant, small-minded racism," before thanking fans for their "overwhelming" support after the incident.
