Arsenal midfielder Matteo Guendouzi will face no further action after the confrontation with Neal Maupay on Saturday after the Gunners' defeat.
The incident happened right after the final whistle by the referee on Saturday and Guendouzi grabbed Maupay by the throat.
The FA reviewed the case and stated that the altercation was not seen by the match officials at the time but, after it was subsequently reviewed by the VAR and no action was taken, the young Frenchman will face no further punishment.
Maupay scored the winning goal of the contest deep in the added time to help the relegation-threatened Brighton win their first game of 2020.
Earlier in the first half the Brighton match-winner badly fouled Bernd Leno, Arsenal goalkeeper, who was stretchered off the pitch in the 36th minute with as it seems a very bad knee injury.
After the match, Maupay said that he had no intentions of hurting Leno, but he heavily criticized Arsenal players for "talking a lot" when they were in front through Nicolas Pepe's opener.
However, Brighton coach Graham Potter stated that he is not surprised by FA's decision.
"It's up to the FA or Premier League to decide. I think it was an emotional moment. When a team loses in the last minute it's a sore one and you expect emotions," he said.
"I don't think there was anything too serious. It's one of those things. We move on and get ready for Leicester."
Mikel Arteta will breath way more easily now as Guendouzi will be available for the next match as Arsenal manager will be without up to seven first-team players for their trip to Southampton.
Pablo Mari and Granit Xhaka got injured in Arsenal defeat to Manchester City on Wednesday, and as it seems Mari will be out for at least four months.David Luiz will miss the game too as he remains suspended due to a red card.