Liverpool have pledged to fully co-operate with any investigation arising out of an incident between Roberto Firmino and Everton's Mason Holgate during the Reds' 2-1 FA Cup win at Anfield.
The pair were involved in an angry exchange after Holgate pushed Firmino into the front row of the Main Stand and words were exchanged which left the Everton player incensed.
Sky sources understand referee Bobby Madley will include the flashpoint in his match report to the Football Association and Liverpool have said they will assist in any way they can should further investigation be required.
A Liverpool spokesman said: "The club and player will fully cooperate with the relevant authorities to ensure the facts are established in a thorough manner if deemed necessary or requested.
"While that process is ongoing, we will not be making any further comment."
Everton manager Sam Allardyce was asked in his post-match press conference whether the incident was sparked by an alleged racist comment and said: "I'm telling you nothing until whatever systems are used to find out exactly what happened and what didn't happen.
"I'm here to talk about football, not controversial incidents."
Allardyce's counterpart Jurgen Klopp thought tempers had flared as a result of Holgate's shove on Firmino.
"I misjudged the situation completely because I thought it was about the Holgate foul," said the Liverpool boss.
"At the end there's no foul, no yellow card, nothing. I didn't get it to be honest, that it was a throw-in.
"I didn't understand the whole situation after the game. I got information that something obviously happened but I can't say anything about it."
Soon after the final whistle, Holgate deleted his Twitter account.