There is your answer from the FA:
The FA has today [Monday 14 May] charged Queens Park Rangers midfielder Joey Barton in relation to two acts of alleged violent conduct during Sunday’s match against Manchester City at the Etihad Stadium.
Following the player’s dismissal in the 54th minute of the fixture, there followed two incidents involving Manchester City’s Sergio Aguero and Vincent Kompany.
As Barton had already been dismissed, both of these incidents fell outside of the jurisdiction of the referee.
Barton has until 6pm on Tuesday 15 May to respond to the charges.
Done for Tevez,Aguero and Kompany
I honestly think the Twitter comments will get brought into as well at some point
The FA has today [Monday 14 May] charged Queens Park Rangers midfielder Joey Barton in relation to two acts of alleged violent conduct during Sunday’s match against Manchester City at the Etihad Stadium.
Following the player’s dismissal in the 54th minute of the fixture, there followed two incidents involving Manchester City’s Sergio Aguero and Vincent Kompany.
As Barton had already been dismissed, both of these incidents fell outside of the jurisdiction of the referee.
Barton has until 6pm on Tuesday 15 May to respond to the charges.
Done for Tevez,Aguero and Kompany
I honestly think the Twitter comments will get brought into as well at some point