Citizens Advice Scotland has suspended chief executive Margaret Lynch, pending an investigation.
The charity declined to comment on the reasons for her suspension or the nature of the investigation.
Lynch, who has led the independent consumer advice charity since July 2012, has been suspended from her job for the past month, according to the Sunday Herald newspaper.
A CAS spokesman said: "We can confirm that the CEO is suspended. At present we are unable to make any further comment."
Lynch is the third chief executive of the organisation in the past five years and came to CAS from the Scottish Mediation Network, where she spent two years as director. She previously worked as quality matters coordinator for the Scottish Council for Voluntary Organisations.
In her LinkedIn profile, Lynch describes her three years leading CAS as "a considerable period of growth and change", during which the charity’s annual income has grown from £5.2m to £14m.
The profile says: "I have experience of leading complex organisations and delivering consistent social and economic development programmes across 25 countries.
"I am a strategic thinker with an ability to lead organisations which punch above their weight. I have advised on the development and implementation of government policy in Scotland, the UK and internationally."