Jurgen Klopp refused to be drawn on the incident involving Andy Robertson and Constantine Hatzidakis.
Robertson claimed to have been elbowed by linesman Hatzidakis at half-time of Liverpool's crunch match against Arsenal. The Gunners led 2-1 at the break.
The Scotland international was seen approaching Hatzidakis, who then appeared to raise his arm towards the defender. Members of the Reds’ squad then surrounded referee Paul Tierney following the incident, with Robertson receiving a yellow card.
