Manchester United have condemned racial abuse which was aimed at midfielder Paul Pogba on social media after his missed penalty in the 1-1 draw at Wolves on Monday night.
Pogba saw his 68th-minute spot-kick saved by Rui Patricio as United dropped points in the Premier League.
In a statement, United said: "Everyone at Manchester United is disgusted by the racial abuse aimed at Paul Pogba last night and we utterly condemn it."
United defender Harry Maguire wrote on Twitter: "Disgusting. Social media need to do something about it... Every account that is opened should be verified by a passport/driving licence. Stop these pathetic trolls making numerous accounts to abuse people".
Pogba became the third footballer in England to suffer such abuse in the space of a week following a missed spot-kick, with racist abuse also directed at Reading's Yakou Meite and Chelsea's Tammy Abraham in recent days.
Other fans were quick to condemn some of the posts seen on Monday night, many of which were subsequently deleted.
United's statement continued: "The individuals who expressed these views do not represent the values of our great club and it is encouraging to see the vast majority of our fans condemn this on social media also.
"Manchester United has zero tolerance of any form of racism or discrimination and a long-standing commitment to campaigning against it through our #AllRedAllEqual initiative.
"We will work to identify the few involved in these incidents and take the strongest course of action available to us. We also encourage social media companies to take action in these cases."
Pogba's team-mate Marcus Rashford also took to Twitter, saying: "Enough now, this needs to stop @Twitter".