The Uruguay star appears to bite Italy's Giorgio Chiellini in the 80th minute of the World Cup match between the two teams.
The incident occurred in the second half of the game that saw Uruguay claim a 1-0 victory to put the nation through to the knockout stages of the competition, with Diego Godin's winner earning second place in the group.
But the main talking point of the game will be Suarez's altercation with Chiellini, with the Italian defender visibly angered by the challenge, initially going down to the ground before approaching the referee and showing him visible marks on his shoulder.
It is not the first time that Suarez has been called into question over the alleged biting of an opponent, with the 26-year-old having previously been banned on two separate occasions for similar incidents.
The first, during his Ajax days back in 2010, saw Suarez bite Otman Bakkal's shoulder which saw him receive a seven-game ban, while he was hit with a 10-game suspension for biting Chelsea defender Branislav Ivanovic during a Premier League game in April 2013.