Chelsea striker Diego Costa has been banned for three matches after a charge of violent conduct during Saturday's 2-0 win over Arsenal at Stamford Bridge was upheld.
Costa had denied a Football Association charge over the incident, not seen by referee Mike Dean, in which he appeared to raise his hands to Gunners defender Laurent Koscielny.
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An FA statement read: "An FA charge against Diego Costa for violent conduct not seen by the match officials but caught on video has been found proven following an Independent Regulatory Commission hearing.
"The Chelsea forward will, therefore, serve the standard penalty of a three-match suspension with immediate effect.
"The charge, which the player denied, was in relation to an incident involving Arsenal's Laurent Koscielny in the 43rd minute of the game on Saturday [ 19 September 2015 ]."
Earlier on Tuesday, Arsenal defender Gabriel won an appeal against his red card for confronting Costa after the initial incident.
The FA announced in a separate statement that it had accepted Arsenal's challenge to the decision and withdrawn the three-match suspension.