A Blyth Spartans footballer has claimed he was the subject of a racial slur from a rival player during a game.
Richard Offiong tweeted a Colwyn Bay player said to him: "Where's your bunch of bananas, show me your passport."
Offiong has confirmed to BBC Wales that he has made an official complaint to the footballing authorities.
Colwyn Bay chairman Bob Paton said in a statement: "We are aware of what is being said and will be making our own internal enquiries."
The Welsh club has said that there will be no further comment made until the internal investigation has been completed.
The Football Association confirmed on Monday it had received a complaint, which it had passed on to the Football Association of Wales as it would come under their jurisdiction.
The alleged incident took place during Saturday's 2-2 draw in the Blue Square Bet North division.
The claim from 28-year-old Offiong, who joined Spartans last September after a short spell in Australia with Oakleigh Cannons, comes at a time when racism in football is under scrutiny.
Last month Queens Park Rangers defender Anton Ferdinand gave a statement to the FA relating to claims of racial abuse by Chelsea and England defender John Terry.
Earlier in October Uefa, European football's governing body, began disciplinary proceedings against the Bulgarian Football Union over alleged racist chanting and flares thrown by fans at the Euro 2012 qualifying game between Bulgaria and England in Sofia on 2 September.