28 Oct: Mark Clattenburg sends off Branislav Ivanovic and Fernando Torres, the latter for a disputed dive, as Chelsea lose 3-2 to Manchester United. Chelsea later confirm they had lodged a formal complaint with the Premier League match delegate regarding "inappropriate language" made by Clattenburgto two of their players. The complaint is understood to relate to alleged racial comments in incidents involving Mikel John Obi and Juan Mata.

29 Oct: Clattenburg is offered the full support of Prospect, the referees' union. The Football Association starts an investigation relating to the allegations. The Professional Game Match Officials confirms Clattenburg will not be involved in the next round of matches. The Society of Black Lawyers sends a letter to the Metropolitan police calling for a legal investigation. The Met confirms it has received a complaint.

30 Oct: The Met launches an investigation.

31 Oct: Chelsea lodge a complaint with the FA regarding "inappropriate language" directed at Mikel by Clattenburg during Sunday's match.