FIFA said it would study the referee' s report and the match video.
Ouch! Suarez appears to bite again
Luis Suarez shocked the World Cup with a new biting storm Tuesday as Uruguay sensationally dumped ten-man Italy out of the tournament with a dramatic 1-0 victory.
But Italy's stunning exit was overshadowed by an incredible incident involving Suarez – already banned twice before for biting opponents.
Television replays showed Suarez appearing to attempt to sink his teeth into Italian defender Giorgio Chiellini's shoulder in an off-the-ball incident.
Chiellini angrily remonstrated with Mexican referee Marco Rodriguez, pulling his shirt off his shoulder to show red marks on his neck.
Afterwards a disgusted Chiellini told Italian television: "He bit me, it's clear, I still have the mark."
"The referee should have blown his whistle and given him a red card, also because he was simulating," added the Juventus player.
Suarez sought to play down the incident in comments to Uruguayan television, claiming Chiellini had barged him.
"There are things that happen on the pitch and you should not make such a big deal out of them," Suarez said.
Uruguay's veteran manager Oscar Tabarez pleaded ignorance of the incident.
"I didn't see it. I'd like to see the images first," he told a press conference.
Tabarez also suggested Suarez was being victimised by journalists.
"He is the preferred target for a lot of media," Tabarez said.
Pressed on the issue, a visibly irritated Tabarez refused to condemn Suarez. "This is a football World Cup, it's not about cheap morality."