A fan group has condemned homophobic chanting as a "stain on our game" after arrests were made during the FA Cup fourth round match between Hull City and Chelsea on Friday.
Spectators were warned over the PA system to stop discriminatory chanting late in the first half of the match at Hull City's MKM Stadium, and that CCTV inside the ground was being monitored.
A second-half update confirmed that action had been taken, including arrests.
The club did not confirm the number of arrests made. BBC Sport has contacted Humberside police for comment.
An on-screen message displayed inside the ground read: "There has been discriminatory chanting from fans inside the stadium.