The ITF confirmed the officiating certifications of the duo have been permanently revoked following an investigation by the Tennis Integrity Unit (TIU).

Aslan and Ulker were found to have breached articles A10, A13 and B1 of the 2015 code of conduct for officials.

The latter was found guilty of using his mobile phone to communicate the scores of matches which he was officiating to a third party at the ITF Futures event in Belek last October.

It was also ruled that he delayed inputting scores into his PDA device, which was said to have allowed "one or more third parties" to benefit by placing bets on matches in which he was officiating.

Ulker was found to have "counselled or procured another official and/or officials to participate in the fraudulent manipulation of the live-scoring system on or around January 2015", including Aslan.

The two men were also deemed to have delayed the inputting of results and/or fraudulently manipulated scores by inputting fictitious deuce games into their PDA device, while officiating at other ITF Futures events between January and September 2015.

Both Aslan and Ulker were said to have refused to comply with the TIU’s requests to surrender their mobile phones, as well as failing to report to the joint certification programme for the unlawful conduct of officials.

"The ITF Disciplinary Panel imposed a life ban on Mr Aslan and Mr Ulker with immediate effect, which means that their ITF officiating certifications are permanently revoked, and they will not be able to officiate at events organised or sanctioned by the ITF, ATP and WTA, or at Grand Slam tournaments," an ITF statement read.

"They will also be included on the non-accreditation list circulated to sports stakeholders."

"The code of conduct for officials applies to all certified officials working at ITF, ATP, WTA and Grand Slam events."

The sanctioning of the officials comes swiftly after Uzbekistan umpires Sherzod Hasanov and Arkhip Molotyagin were banned for life for betting offences earlier this month.

French tennis player Constant Lestienne received a seven-month ban and a fine of $10,000 (£7,700/€9,000) on September 22 for betting on 220 matches between February 2012 and June 2015.

His ban was followed by Joshua Chetty of South Africa being banned from tennis for life after he was found guilty of attempting to fix matches on Wednesday (September 28).

Allegations of widespread match-fixing in tennis were revealed on the eve of the Australian Open, the first Grand Slam of the year, in January.