The Football Association and PGMOL will investigate Andy Robertson’s clash with linesman Constantine Hatzidakis during Liverpool’s match against Arsenal on Sunday.
The Anfield encounter saw the Gunners open up a two-goal lead before Liverpool battled back to secure a draw.
Mohamed Salah reduced the deficit just before half-time after Gabriel Martinelli and Gabriel Jesus had put Arsenal ahead. Roberto Firmino netted a late equaliser to earn a point for the Reds.
The result leaves Arsenal six points ahead of Manchester City, but the reigning champions have a game in hand and still have to face the Gunners later this month.
One of the main talking points of the thrilling contest occurred at half-time, with Hatzidakis elbowing Robertson after the whistle was blown.
The Scotland international, who was warned by referee Paul Tierney for haranguing the linesman earlier in the game, was incensed by the incident.
The experienced left-back was booked for dissent in the aftermath, but Hatzidakis will likely face punishment for his actions.
PGMOL released a statement (as per the Guardian) saying they were aware of the incident and would review it after the game.
A similar incident occurred last month during the FA Cup match between Fulham and Manchester United when Aleksandar Mitrovic pushed referee Chris Kavanagh.
Despite apologising for his behaviour, the Serbian striker was given an eight-game ban.
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