The Foxes have confirmed Tom Hopper, Adam Smith and James Pearson - the son of first-team manager Nigel Pearson - will leave the club with immediate effect.
"The decision follows the conclusion of an internal investigation and disciplinary proceedings, as a consequence of events that took place during the Club’s end-of-season goodwill tour of Thailand," a club statement read.
"Leicester City Football Club is acutely aware of its position, and that of its players, as a representative of the city of Leicester, the Premier League, the Football Association and the Club’s supporters.