Chelsea have pledged to take the 'strongest possible action' after a video circulated on social media of a spectator allegedly using 'abusive language of a sectarian nature' towards Aston Villa's John McGinn.
The Blues have launched an investigation into abuse appearing to be directed at Scotland midfielder McGinn, during the Blues' 3-0 Premier League win at Stamford Bridge on Saturday.
The London club have appealed for help in identifying the alleged culprit from Saturday's match, with Villa saying they are 'grateful' for the west Londoners for launching the investigation.