Uruguay forward Luis Suarez allegedly bit Italy's Giorgio Chiellini in Uruguay's 1-0 victory in the 2014 FIFA World Cup on June 24.
"Luis Suarez is at the centre of another biting controversy after he appeared to sink his teeth into the shoulder of an Italian defender at the World Cup.
"The striker clashed with Giorgio Chiellini in the 79th minute of his country's Group D match, a game they won 1-0 to advance to the last 16.
"Television replays showed Suarez moving his head toward Chiellini, who responded by swinging his arm.
"The defender then chased the referee, showing him his shoulder, apparently insisting he had been bitten.
"Despite the protests, the referee took no action.
"Suarez fell to the floor holding his face in the aftermath and appeared to indicate he had hurt his teeth.
"FIFA has announced it is investigating the incident and could choose to suspend Suarez, who served a 10-match ban last year for biting Chelsea defender Branislav Ivanovic.
"A spokesman said: 'We are awaiting the official match reports will gather all the necessary elements in order to evaluate the matter.'
"World football's governing body can hit players with retrospective bans of up to two years if its discipinary commission decides there is a case to answer.
"Speaking to Rai TV after the game, Chiellini said: 'It was ridiculous not to send Suarez off.
"'It is clear, clear-cut and then there was the obvious dive afterwards because he knew very well that he did something that he shouldn't have done.'
"Italy's coach, Cesare Prandelli, said: 'I didn't see Suarez biting him but I saw the bite marks on his shoulder but the referee's assistants were so busy they didn't see anything.
"'It's a shame, it's a real shame that it turned out like this.'
"Suarez's coach refused to criticise his star striker, claiming he 'is the target of certain sections of the press.'
"Oscar Tabarez said: 'If we believe people are attacking him, as has happened in this press conference, that we're going to defend him.
"'He's a vital player, a very important person to the group.'
"Before his move to Liverpool in 2011, Suarez was suspended for seven matches by the Netherlands football federation after biting Eindhoven's Otman Bakkal when he played for Ajax."
For his part, Suarez tried to downplay his actions, telling ESPN FC they are not a big deal:
"Uruguay striker Luis Suarez has attempted to play down his apparent bite of Italy defender Giorgio Chiellini, saying 'there are things that happen' during a game.
"Suarez, 27, appeared to bite the shoulder of his opponent off the ball in the box when the game was goalless. The referee did not see the incident and took no action, and moments later Diego Godin headed in the goal which put Uruguay through at the expense of Italy.
"Although he did not refer specifically to the clash with Chiellini, Suarez said in a post-match interview: 'These are just things that happen out of the pitch. It was just the two of us inside the area and he bumped into me with his shoulder, and that's how my eye got like this as well.
"'These are things that happen on the pitch and you should not make a big deal out of them.'
"FIFA has the ability to retrospectively punish Suarez and has confirmed it is collating all the available information before making any decision on further action.
"Suarez said he was 'very happy' that Uruguay had qualified. 'We take it one match at a time. We know it is a tough situation, we are being pushed to the limit,' he said."
USA TODAY's Nancy Armour argues Suarez should be reprimanded severely for what he did to Chiellini:
"This is the World Cup, not a day care center.
"FIFA must punish Luis Suarez swiftly and severely for biting Italy's Giorgio Chiellini during Tuesday's game. It may not have the guts to ban him for two years, as rules permit, but it cannot let him set foot on the field again during this World Cup.
"'It was ridiculous not to send him off,' Chiellini said after the game. 'Suarez is allowed to do whatever he wants, and FIFA allows it because they want the superstars to play.'
"Gifted as he is, however, Suarez has become an embarrassment to the game.
"Biting someone is never acceptable -- any four-year-old can tell you that. But apparently they didn't teach that in the Suarez household because this was the third time he's sunk his choppers into an opponent.
"Not his first offense. Not the second.
"That alone is worthy of an extended timeout. That Suarez did this on soccer's biggest stage, in a game that would determine the fate of both teams, is simply inexcusable."