The Football Association will investigate allegations of racist abuse by a Manchester City supporter during Saturday's derby at the Etihad Stadium.
A video circulating on social media appeared to show a fan aiming monkey chants towards Manchester United players during the Red Devils' 2-1 victory.
City swiftly issued a statement saying the club was working with Greater Manchester Police and the FA was planning to talk to the clubs, referee Anthony Taylor, the police and other relevant parties.
A spokeswoman told the PA news agency: "We will be investigating."
"On the field, I didn't see anything. I saw it only in the locker room afterwards," the former Shakhtar Donetsk midfielder told ESPN Brazil. "The guys showed me. He even threw a lighter and it hit me. I try not to care about that. I try to look ahead.
"Unfortunately, this is happening in some stadiums. It happened here, it happened in Ukraine with some friends. It's sad, but we have to keep our heads up and forget about that. We can't give them any attention because that's all they want. I spoke to the referee after the match, they will do something about it and that's all.
"We are all the same regardless of skin colour, hair and gender. We came from the same place and we all go to the same place when it's all said and done. Thank God I have a lot of friends here in the locker room who hugged me, like Lingard. I don't want to think about it. I just want to move on."
