A Swampscott, Massachusetts-based IRS agent with specialized knowledge of accounting and investigative auditing techniques was arrested on Wednesday for allegedly filing false tax returns for three years in a row. The Department of Justice (DOJ) announced the arrest of 67-year-old Ndeye Amy Thioub, who has been charged with filing false tax returns in 2017, 2018 and 2019. Thioub has worked for the IRS for more than 17 years and is currently working as a revenue agent with the Large Business and International Division of the IRS. In her role, the DOJ said, Thioub does independent examinations in the field, along with investigations into complex income tax returns of large businesses, corporations and organizations. Charging documents allege that Thioub has specialized knowledge of accounting techniques, practices and investigative auditing techniques.