Brendan Rodgers has said that referee Howard Webb missed an "easy decision" to award Liverpool a penalty during their FA Cup defeat to Arsenal.
Luis Suarez fell after tangling with Alex Oxlade-Chamberlain while pressing with an equaliser in the 2-1 defeat earlier today.
The manager told Sky Sports News: "I thought that was quite an easy decision for the ref. Luis has a touch, gets around him and it looks a blatant penalty.
"We're bitterly disappointed to have not got that because then it just keeps our momentum going for the final stages of the game. For me, it's gone. You can't change it, you can't affect it.
"I'll speak to an assessor. It would be nice to know why it wasn't given, because it can be a defining moment in the game."
The defeat came eight days after Liverpool's 5-1 win over the Gunners.