Ashfield District Council leader Jason Zadrozny has been found guilty of fraud and tax evasion.
Zadrozny, of Stanton Hill, was accused of setting up a fake heritage group to defraud Nottinghamshire County Council out of thousands of pounds.
Prosecutors also alleged he failed to pay tax on four rental properties.
The 46-year-old, who served as an Ashfield Independents councillor on the county council, was found guilty of nine counts of fraud and four counts of tax evasion.
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