Liverpool left-back Andy Robertson was struck on the face by assistant referee Constantine Hatzidakis in a remarkable incident just after the halftime whistle of Sunday's Premier League clash with Arsenal.
The Scotland captain approached the linesman, who then thrust his elbow into Robertson's chin.
The PGMOL body, which governs referees in English football, has said it is investigating the incident between linesman Constantine Hatzidakis and Andy Robertson. pic.twitter.com/XLGXNqHl4P
— Sky Sports Premier League (@SkySportsPL) April 9, 2023
Robertson was then shown a yellow card by referee Paul Tierney as he furiously protested.
Arsenal led 2-1 at halftime as the Gunners aim to take a step closer to the Premier League title.