Andy Robertson claimed to have been elbowed by linesman Constantine Hatzidakis at half-time of Liverpool's crunch match against Arsenal.
The Liverpool full-back was seen approaching the official, who then appeared to raise his arm towards the defender.
Liverpool players surrounded referee Paul Tierney following the incident, with Robertson receiving a yellow card.
'I think the linesman throws an elbow,' said Jamie Carragher on Sky Sports commentary.
Touchline reporter Geoff Shreeves confirmed Liverpool players had claimed Robertson had been elbowed by the official.
Andy Robertson claimed to have been elbowed by the linesman at the end of the first half
Robertson left reportedly claimed he had been elbowed in the throat at half-time of the match
Liverpool remonstrated after the alleged incident with linesman Constantine Hatzidakis
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