PA Sport - Tue, 09 Mar 09:05:00 2010
The England midfielder was booked in the 81st minute of the Premier League clash at the DW Stadium following a robust challenge from behind on James McCarthy, and replays of the incident suggested that Gerrard had gestured towards Marriner as well as mouthing an obscenity at the official.
Marriner did not punish the gesture at the time, although it is not certain whether that was due to the official's failure to see the incident or simply a decision to let it go.
If the former proves to be the case, the FA may decide that Gerrard, who captained England in their 3-1 friendly victory over Egypt last week, has a case to answer. If not, the FA is likely to let the matter drop.
Liverpool officials who spoke with Gerrard at full-time were insisted the gesture was not meant to be offensive or directed at the referee.
Reds manager Rafael Benitez, speaking after the game, insisted he had not seen the incident.
"I don't know, I was too far away," he said.