The State Department inspector general fired by President Trump was looking into allegations that a staffer for Secretary of State Mike Pompeo was performing domestic errands and chores such as handling dry cleaning, walking the family dog and making restaurant reservations, said a congressional official familiar with the matter.

Steve Linick, the quasi-independent watchdog whose job it was to expose waste and malfeasance within the agency, investigated a number of issues at the State Department that agitated senior Trump administration officials, but it remains unclear what specifically triggered his ouster Friday night.

The congressional official, speaking on the condition of anonymity because the matter remains highly sensitive, said that the State Department staffer was a political appointee and that at least one congressional committee learned of the allegations around the time of Linick’s firing.