Investigators from the Criminal Intelligence and Investigations Bureau in American Samoa have been pouring over employee time cards at the Executive Office Building in Utulei.
Sources say that the officers are looking for details of employees who have earned thousands of dollars more in overtime than their regular salaries.
The CIIB investigation was prompted by a request from the Senate Select Investigative Committee to the Attorney General to look into excessive overtime payments in several government departments.
Last year, the SSIC questioned employees of Customs, the payroll division of Treasury, Agriculture and the Department of Education over overtime payments.
The SSIC investigation showed that in nearly all cases, employees who were not entitled to overtime consistenly received overtime payments which totaled more than their regular pay.