Keechant Sewell, commissioner of the New York Police Department, said Monday she would resign.

“While my time here will come to a close, I will never step away from my advocacy and support for the N.Y.P.D., and I will always be a champion for the people of New York City,” she said in an email to the department provided by two officers.

She did not give a reason for her departure.

Ms. Sewell, who was appointed to her position by Mayor Eric Adams in 2022, was the first woman to head the nation’s largest police force.

This is a breaking story and will be updated.