Arsenal have launched an investigation after a video emerged online where a supporter can be heard racially abusing Napoli defender Kalidou Koulibaly.
The Gunners won their Europa League quarter-final first leg meeting 2-0 at the Emirates Stadium but another incident of racism will overshadow the result.
In a Snapchat video shot during the game, the culprit can be heard using the ‘n-word’ to refer to Koulibaly – with the word also written across the screen for part of the 15-second recording.
“We utterly condemn use of this type of racist language and have launched an investigation to identify the culprit,” Arsenal said in a statement.
“We operate a zero tolerance approach and anyone behaving like this is not welcome at Arsenal and will be banned from matches.
“We have an extremely diverse community of fans who are all part of the Arsenal family and such incidents are rare at the Emirates Stadium. We encourage supporters to report any incidents as they happen to stewards or via our matchday alert service.”