Liverpool manager Jurgen Klopp has been furious about poor officiating during Everton's 2-2 escape at Goodison
Premier League champions Liverpool were denied a derby-day win on Saturday stretching from Jordan Pickford's challenge on Van Dijk in the penalty area to Jordan Henderson's stoppage-time strike which was ruled out for a borderline offside against Sadio Mane.
The Reds were unhappy that no action was taken against Pickford after the Everton goalkeeper's knee-high challenge on Virgil van Dijk in the opening minutes. Van Dijk had to be replaced and was sent to hospital for a scan after the game.
Liverpool are understood to have asked the Premier League to investigate why Pickford's tackle was not looked at by the VAR official, David Coote, as well as to explain how Mane was adjudged to have been offside for the disallowed Henderson goal.
Jurgen Klopp was a bit 'pissed' after the showdown either, the Liverpool manager said: "I haven't seen it again. Only in the game, and for me it was a clear penalty that I saw.
"Obviously, we saw the flag went up for offside. I still thought it was worth having a look for the foul but that didn't happen.
"We have no power there. We just sit here and we discuss it. We have to ask other people about that, not me.
"It's not a challenge a goalkeeper can do in the box. If it’s not offside it’s a 100% penalty."
On Jordan Henderson's disallowed goal the German added: "I came into the dressing room and there were people standing there saying they'd watched the [VAR disallowed goal] situation back and they were saying they didn't understand why they whistled offside.
"I'm really in support of VAR and especially with offside you expect that the right decision would be made. We scored a goal one time at Aston Villa and they said the armpit was offside! It sounds funny, but we got it.
"This time, the picture I saw once was that there wasn't an armpit call, it was just offside. Since then, I've had about 10 interviews and everybody tells me that it was not offside and this doesn't lift my mood, obviously.
"It's tricky, but we've lost one player in a situation where VAR was not involved [Pickford on Van Dijk] and maybe another one in the red card situation [Richarlison on Thiago Alcantara], and we've scored a legitimate goal which didn't count. It was obviously not our day but it was the performance I wanted to see."