Independent inspectors general of at least 12 federal agencies were notified of their immediate dismissals via emails from the White House personnel director, The Washington Post reported, citing unnamed people familiar with the actions.
Inspectors general have an oversight role to detect and deter fraud, waste and abuse by government employees.
They are responsible for investigating violations of laws, regulations and ethical standards by employees, and conducting audits of contracts, finances and staff performance.
Among the federal agencies affected by the ousters were the departments of defense, state, interior and energy, as well as the Environmental Protection Agency and Social Security Administration, the Post said.