Luis Suarez has admitted biting Italy defender Giorgio Chiellini during Uruguay's World Cup group game against the Italians and apologised on Twitter.

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The apology comes just two days after it emerged that Suarez -- who was banned for nine Uruguay matches and from all football activity for four months -- had denied biting his opponent in a submission to FIFA's disciplinary committee.

My apologies to Chiellini: pic.twitter.com/CvfkkjxzlM - Luis Suarez (@luis16suarez) June 30, 2014

His Monday post on the social networking website acknowledged that he had bitten Chiellini, apologised to the defender and promised that an incident of that sort would never happen again.

Chiellini, who had said he felt Suarez's ban was excessive, responded with a tweet in which he said the incident was behind him and expressed hope that the ban would be reduced.

.@luis16suarez It's all forgotten. I hope FIFA will reduce your suspension. - Giorgio Chiellini (@chiellini) June 30, 2014

Two days ago, it was revealed that Suarez had told the disciplinary panel there was nothing deliberate about what happened.