In an interview, Thomas McCormack, the commissioner of the integrity unit, said that his agency was as vigilant as ever.

The District Attorney said today that her public integrity unit was reviewing the lawsuit as part of a broader investigation into City Hall.

Jackson's lawyers noted that a lawyer at the Justice Department's public integrity unit told them that it was closing its investigation.

I created the public integrity unit.

Paul E. Murray, the deputy chief state's attorney for operations, declined to comment on the activities of the state's new public integrity unit.

Last year, he created a public integrity unit to pursue such cases, but he had only two lawyers and one investigator working both local and state matters.

The public integrity unit marks a distinct expansion of the attorney general's traditional role, according to government experts.

Higher standards were established for officers, and a new "public integrity" unit replaced the comically ineffective Internal Affairs division.

The inquiry was first assigned to the Justice Department's public integrity unit, which prosecutes official corruption.

The investigation opened a new front for the public integrity unit that Mr. Cuomo expanded this year.