FIFA anti-corruption adviser Alexandra Wrage has quit her role because of a perceived lack of progress from the organisation in improving its internal transparency.
Wrage, the president of international compliance expert TRACE, had taken up a role on an advisory board that was designed to aid the introduction of modernising reforms in the wake of bribery and World Cup vote-buying scandals.
However, she has now left the position after becoming frustrated by FIFA's approach to handling corruption.
"[FIFA] remains the closed society that fuelled its problems to begin with,'' a statement on TRACE's website read.
Wrage has previously publicly stated her dismay at FIFA's rejection of modernising proposals including greater transparency in regard to salaries and bonuses and more women candidates for high-profile jobs.
Meanwhile, FIFA president Sepp Blatter was left red-faced on Monday after his Twitter account and that of the FIFA World Cup were hacked by a group called the Syrian Electronic Army.
A series of out-of-character tweets included the suggestion that Blatter was to resign and that he wanted Jordan to be the hosts of the 2030 World Cup.
So what if I took money from Qatari prince? I am the family's bread earner twitter.com/SeppBlatter/st…— Joseph S Blatter (@SeppBlatter) April 22, 2013
It was decided that the president Sepp Blatter is to step down due to corruption charges— FIFAWorldCup (@FifaWorldCup) April 22, 2013
However, FIFA's official media account, @fifamedia confirmed: "Some FIFA accounts, incl. @SeppBlatter and @fifaworldcup, have been hacked. If in doubt, please verify any info with FIFA office."