Michael Obafemi was central to Swansea's massive 4-0 win away to Cardiff City in early April. The Swans took a huge win away to their bitter rivals, and Obafemi contributed two goals to their cause.
His goal celebration riled up plenty of Cardiff fans, but the reaction from one of their fans went in a wholly unacceptable and deplorable direction.
Video footage has emerged of a home fan at the early April game in Cardiff speaking about the first half, in which he uses racist language about Obafemi.
Both clubs have responded to the video, with Cardiff calling the clip "deplorable" and "stomach-churning", and Swansea condemning the abhorrent abuse against the Irish international.
Michael Obafemi: Police investigating clip of racist abuse against Irishman
Earlier this week, Michael Obafemi's Swansea teammate Joel Latibeaudiere shared a video on Twitter which showed a Cardiff fan using derogatory and racist language towards Obafemi.
The video has since attracted the attention of both clubs, with Cardiff's statement confirming that the South Wales Police are now investigating the clip:
Cardiff City have spoken at length with Kick It Out on the matter, have passed evidence on to South Wales Police and will fully support their investigations.
The club is disgusted by the deplorable, stomach-churning language and stands by football’s commitment to stamping out such abhorrent behaviour.
There is no place for it in our sport or society.
Swansea, in turn, responded to the video.
They confirmed that they were working alongside Cardiff and the police to ensure that swift and decisive action was taken against the fan in question.
Swansea City Football Club is aware of a video circulating on social media from the fixture against Cardiff City on April 2.
We wholly condemn the abhorrent language used and we are actively working with South Wales Police and Cardiff City with their enquiries.
There is no place for such behaviour in society, let alone football, and as a club we will unequivocally support our players and staff to help eradicate all forms of discrimination from the game.
The clip casts a dark cloud over what was an otherwise triumphant afternoon for Michael Obafemi and his Swansea teammates.
Obafemi has made a strong finish to the season, scoring 11 goals in his last 16 appearances, including another on Saturday in defeat to Nottingham Forest.