The International Tennis Federation had announced that two umpires have been banned, with four more being placed under investigation over allegations of match-fixing.
In a joint statement, the Tennis Integrity Unit (TIU) and ITF said: “Kirill Parfenov of Kazakhstan was decertified for life in February 2015 for contacting another official on Facebook in an attempt to manipulate the scoring of matches.”
“Separately, Denis Pitner of Croatia had his certification suspended on 1 August 2015 for 12 months for sending information on the physical well-being of a player to a coach during a tournament and regularly logging on to a betting account from which bets were placed on tennis matches.”
The statement added: “To ensure accuracy of reporting, four officials are currently suspended pending the completion of ongoing investigations by the TIU.”
“In order to ensure no prejudice of any future hearing we cannot publicly disclose the nature or detail of those investigations. Should any official be found guilty of an offence, it will be announced publicly.”
This follows claims of match-fixing that were brought on by a joint investigation by the BBC and Buzzfeed.
Uncovered files revealed that 16 high-ranking players have been repeatedly flagged by the TIU over suspicions that they have thrown matches over the past 10 years.
The events led to the announcement of an independent review into the anti-corruption practices of the game.