Police are investigating an allegation that an Oldham player racially abused a ball boy during their meeting with Sheffield United on Saturday.
South Yorkshire Police confirmed it was looking into the claim that an unnamed player abused the ball boy during the League One club's 1-1 draw against Sheffield United at Bramall Lane.
Oldham said the player denied the allegation and that they and his team-mates were fully supportive of him.
In a statement last night, the club said: "Oldham Athletic Football Club was made aware by South Yorkshire Police after today's npower League One match at Sheffield United of an allegation of racist abuse by one of its players.
"The player has categorically denied the allegation and the club and his team-mates are fully supportive of him.
"The club understands that the police are making enquiries into the allegation and, as a result, will not be making any further statements in relation to this matter.''
Another League One club, Brentford, announced on Saturday night that they were looking into a racially-abusive comment posted about their striker Clayton Donaldson on Twitter.
A statement from the club read: "The club takes all forms of discrimination very seriously and will seek to take action against the person concerned."
Information from the Press Association was used in this report