Shocking footage has shown an Everton supporter appearing to be knocked out in violent clashes with Arsenal fans on Sunday.
Videos shared on social media showed supporters fighting following Arsenal's 2-1 win over Everton at the Emirates Stadium.
Despite the victory, Arsenal were forced to settle for second place in the Premier League as Man City's 3-1 win over West Ham saw the reigning champions clinch a fourth consecutive title.
Footage shows clashes between supporters as Everton fans attempt to board a coach following their final league match of the season, with a security guard attempting to intervene.
One Everton fan, with a bloodied face, is seen in a confrontation with rival supporters.
WARNING: GRAPHIC IMAGES
An Everton supporter appeared bloodied after clashes with Arsenal fans on Sunday
The fan was seen attempting to throw a punch before being struck by a rival Arsenal supporter
The supporter is seen attempting to throw a punch at an Arsenal fan, before being struck by another man, appearing to knock him unconscious.
The video shows another Arsenal supporter taking sauce from a nearby burger stand, before appearing to squirt the sauce in the direction of the stricken fan.
Three men, including the security guard, are seen coming to the aid of the Everton supporter.
Mail Sport has contacted the Metropolitan Police for a comment on the incident.
The incident took place after Arsenal's come from behind victory on the final day of the Premier League season.
Everton took a shock lead at the Emirates after Idrissa Gana Gueye's free kick was deflect into the net in the 40th minute.
Footage showed another Arsenal fan squirting sauce over the knocked out Everton supporter
The Gunners responded three minutes later through Takehiro Tomiyasu to level the score level at half-time.
Kai Havertz scored a late winning goal for Arsenal as Mikel Arteta's team ended the season with a victory.
Arsenal were ultimately left disappointed with Arteta's team finishing as runners-up for the second straight season.