Arsenal manager Arsene Wenger was given a four-match touchline ban after calling fourth official Anthony Taylor "dishonest" during their Premier League win over Burnley.
He also swore at the official during the fixture at the Emirates.
The FA's full written reasons also say Wenger pushed Taylor twice when he was asked to leave the tunnel area and needed to be escorted by security staff to the dressing room.
Wenger apologised to Taylor and referee Jon Moss afterwards.
He had been unhappy with the decision to award Burnley a late penalty, although Arsenal subsequently won a spot kick of their own in stoppage time to win the match 2-1.
Moss detailed the turn of events involving Wenger in his match report: "In the 92nd minute of the game, following the award of a penalty against Arsenal, I was informed by Mr Taylor that he had been confronted by Mr Wenger in the technical area.
"He informed me that despite being warned to consider his conduct, Mr Wenger stated to Mr Taylor 'You are dishonest to your federation!'
"Mr Taylor told me that he told Mr Wenger that this was not acceptable to which Mr Wenger replied 'F*** off'. After the penalty kick was scored I walked over to the technical area and asked Mr Wenger to leave the area for inappropriate conduct. I restarted play as Mr Wenger reached the tunnel mouth. Mr Taylor will be adding his report which will include further misconduct following Mr Wenger’s dismissal, which I did not witness."
Taylor's report was also included in the written reason, with the official stating: "Once Burnley had taken the penalty and before the game restarted I informed the referee, Jon Moss, what Mr Wenger had said and he subsequently dismissed Mr Wenger from the technical area. Initially Mr Wenger wanted to return to his technical area and I had to ask him again to leave the vicinity as required. He then chose to stand at the opening of the tunnel. I again approached him and asked him to go to the dressing room area. At this point Mr Wenger pushed me twice and I had to ask the security staff present to escort Mr Wenger to the dressing room area. At the conclusion of the match Mr Wenger visited the officials changing room and apologised to myself and Mr Moss for his earlier actions."
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