NEW YORK — The New York City Department of Investigation is probing the city Sheriff’s Office and the man who leads it, Anthony Miranda, as investigations into Mayor Eric Adams’ inner circle expand, according to five people with knowledge of the situation.

New York City Police Commissioner Edward Caban has resigned. He made the announcement Thursday, just over a week after his phone was seized as part of a federal investigation.

For months, Adams has been fending off claims that corruption and malfeasance permeate the highest ranks of his administration.

Federal prosecutors have subpoenaed the director of New York City’s Office of Asylum Seeker Operations, the latest sign of escalating federal scrutiny into Mayor Eric Adams’ administration.

The mayoralty of New York City is well known for being a dead-end job. No mayor has ever gone on to higher office, though many of them have tried, in over 100 years. The last one, Ardolph Loges Kline,

Even longtime New Yorkers who follow city government might need a scorecard to keep track of all of the federal corruption investigations surrounding New York Mayor Eric Adams and his inner circle.