Suarez in another bite controversy

The Uruguay striker pushed his head towards Chiellini and appeared to bite the defender in the shoulder in the penalty area just before Diego Godin headed Uruguay's winner.

Chiellini pulled his shirt down to show the referee an apparent mark on his shoulder made from the clash.

"It was ridiculous not to send Suarez off," Giorgio Chiellini told Rai TV.

"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."

Liverpool's Suarez was banned for 10 games for biting Chelsea's Branislav Ivanovic in a Premier League match in April 2013.

He was also banned for seven games for biting PSV Eindhoven midfielder Otman Bakkal's shoulder while Ajax captain in 2010.

Suarez was involved in a World Cup controversy in 2010 when he handled on the line to deny Ghana a winner in the last minute of extra-time in the quarter-finals.

Asamoah Gyan misses the resulting penalty and Uruguay won the shoot-out to reach the semi-finals.

There was an almost immediate Twitter reaction to the latest Suarez incident.

Former Liverpool striker Michael Owen said: "Tell me I'm seeing things. Surely Suarez didn't bite someone again? I'm genuinely gutted. I love watching him play more than any other player but he obviously can't control himself."