The incident overshadowed Uruguay's vital 1-0 win over Italy which put them through to the last 16 of the World Cup along with Costa Rica from Group D, Suarez appearing to leave teeth-marks on defender Chiellini's shoulder.
Suarez and the Uruguayan FA have until 9pm BST to present their evidence, in what is the third biting incident related the the Liverpool forward. Suarez was banned for seven games after he bit PSV Eindhoven’s Otman Bakkal in 2010, and last year suffered a 10-game suspension for sinking his teeth into Branislav Ivanovic’s forearm at Anfield in April.
Chiellini called for Suarez to receive a ban, telling Sky Italia: “Suarez has bitten me and the referee saw it, but then there is the need to have the courage to take decisions. We will see if there is the courage to utilise the TV images to ban him."
“It's a shame. We take our responsibilities, but the referee has been bad. [Claudio] Marchisio's red card and the failed one for Luis Suarez, decided the game", he added, referring also to Claudio Marchisio's red card for a 59th-minute challenge on Egidio Arevalo Rios.
33/1 to win the World Cup with Bet365, Uruguay lost their opening Group D game to Costa Rica 3-1 without Suarez in the side, and the striker is now a major doubt for the rest of the tournament with the investigation in progress.
FIFA's maximum punishment lies at 24 matches or two years, the longest World Cup ban in history being eight games for Mauro Tassotti after the Italian broke Luis Enrique's nose with an elbow against Spain in 1994.
Paddy Power place Suarez at 1/14 to be banned from the rest of the 2014 tournament, while Diego Forlan is tipped to be the permanent replacement and is 9/1 to score first against Colombia in their last 16 match with Boylesports.
Italy boss Cesare Prandelli also announced he has quit his role after the 1-0 defeat on Tuesday night. Prandelli said in the post-match press conference: "I talked to the president of the federation and gave my resignation. The technical set-up didn't work, and I take all responsibility for that.
"I chose a certain technical plan and that's why I'm resigning - because it did not work."
Uruguay next face Colombia on 28 June at Rio de Janeiro, the knockout match kicking off at 9pm on Saturday. Click here to compare betting odds for the 2014 World Cup
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