Mayor-elect Zohran Mamdani announced Wednesday, Nov. 19, the appointment of Police Commissioner Jessica S. Tisch to serve as New York City police commissioner in his incoming administration commencing Jan. 1. As the 48th commissioner of the NYPD, he said Tisch has rooted out corruption in the upper echelons of the department and led a department-wide focus on accountability and transparency, while delivering historic reductions in violent crime.