Arsenal and Manchester City have both been charged by the Football Association for failing to control their players in Wednesday's top-of-the-table Premier League clash.
Citizen stars twice surrounded referee Anthony Taylor during their crucial 3-1 win at the Emirates, once just before half-time and the other on 64 minutes. Gunners players did the same in the 56th minute, as Mikel Arteta's title favourites surrendered their position as league leaders on goal difference.
An FA statement alleges both clubs failed to ensure their players behaved in an orderly fashion. The sides now have until February 21 to respond to the charge.
The FA statement read: "Arsenal and Manchester City have been charged after their players surrounded the match official at different times during the Premier League fixture on Wednesday 15 February.
"It's alleged that both clubs failed to ensure their players conducted themselves in an orderly fashion, with Arsenal's players surrounding the match official during the 56th minute, and Manchester City's doing so during the 42nd and 64th minutes.
"Both clubs have until Tuesday 21 February to provide their respective responses."
Man City took the lead against Arsenal through Kevin De Bruyne, who made the most of a Takehiro Tomiyasu error to lob Aaron Ramsdale in goal.
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Arsenal fired back from the penalty spot after Ederson wiped out Eddie Nketiah, with Bukayo Saka sending the Brazilian the wrong way with his spot-kick.
Jack Grealish's deflected effort restored City's lead before Premier League Golden Boot leader Erling Haaland put the result to bed with a close-range shot.
The result sees Man City leapfrog Arsenal at the top of the Premier League on goal difference, but the Gunners have a game in hand over their rivals.
Arteta is confident his Arsenal side are still in the driving seat.
He said: "They still have it [the belief], I can sense it. They feel they can do it.
"I have more belief than I had before the game. With the performance and the level the team put in, we had the feeling we could beat them. Until the second goal, we had them.
"But we gave them three goals and the game at the end. Certain errors at this level, you can't make. At the same time, the team put the level very high.
"The difference was in the boxes, they had three chances and they put them away. We had chances and we didn't put them away."
