Fulham are investigating an allegation that defender Cyrus Christie's sister was hit and racially abused by a fan during their 1-0 defeat to Barnsley on Saturday.
The Republic of Ireland international tweeted after the game: "To the Fulham fan that decided to hit my sister at the game today and his wife who justified his action with racist remarks I hope you're proud of yourself and feel like a big man.
"You'll get what's coming to you. Regardless how you felt about the result your actions are shameful."
Fulham FC statement:
Fulham Football Club is investigating an incident that occurred in the away end of the Barnsley vs Fulham game on Saturday 3rd August.
Should the perpetrators be identified, we will be taking the strongest possible action.