The special agent in charge of the Seattle FBI office and top FBI agent in Washington, Laura Laughlin, retired on Monday.
Spokeswoman Ayn (eyen) Dietrich says Laughlin would have faced mandatory retirement at age of 57 in September and many agents choose to retire before it's compulsory.
Laughlin joined the FBI in 1985 and took over as head of the Seattle office in 2004.
In addition to the state headquarters in Seattle, the special agent in charge is responsible for nine other offices in the state.
The Seattle Times reported Laughlin's retirement on Presidents Day was unusual. Laughlin sued the FBI in 2011 in federal court alleging she had been passed over for promotion and pressured to retire.
Dietrich said she could not provide a contact number for Laughlin.