Samoan duo Faifili Levave and Alesana Tuilagi have been cited following Saturday's loss to Japan that ended their quarter-final hopes.
While skipper Ofisa Treviranus picked up just a citing commissioner warning for a high tackle, Tuilagi and Levave could both face further punishment for first-half incidents in Milton Keynes.
Levave has been cited by independent Citing Commissioner Yves Thieffine (France) for an alleged act of foul play contrary to Law 10.4(f) (playing an opponent without the ball) during the 15th minute of the Rugby World Cup 2015 Pool B match between Samoa and Japan at Stadium MK on Saturday, 3 October.
The hearing will take place at 10:00 on Wednesday, 7 October in London. The case will be heard by independent Judicial Officer Antony Davies (England).
Levave was sin-binned at the time for the tackle.
Tuilagi has also been cited by independent Citing Commissioner Yves Thieffine (France) for an alleged act of foul play contrary to Law 10.4(a) (striking with the knee) during the second minute of the same match.
The Samoan winger caught centre Harumichi Tatekawa with his knee while carrying the ball in the opening minutes of the game.