Assistant referee Constantine Hatzidakis will not officiate in any matches while he is being investigated for an apparent elbow on Liverpool's Andy Robertson.
The incident occurred just after the half-time whistle had been blown during Liverpool's 2-2 draw with Arsenal on Sunday, with Hatzidakis reacting after being confronted by Robertson.
Sky Sports cameras zooming in on the confrontation showed Hatzidakis seemingly throwing up his arm and making contact with Robertson, who gesticulated that he had been hit by the official.
An irate Robertson was led away by team-mates but, while he received a yellow card in the aftermath, it is the action of Hatzidakis that will come under further scrutiny.
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