Kevin Frawley, the city's Commissioner of Investigation, said the indictment was only the first and he expected "there will be additional announcements in coming months."

"This was not a sophisticated fraud," said Susan E. Shepard, the city's Commissioner of Investigation.

They are instead granted to one of his appointees, the Commissioner of Investigation.

Not surprisingly, the city's Commissioner of Investigation, Susan E. Shepard, concurred.

"Since the Commissioner of Investigation is responsible for corruption throughout city government, there's a certain symmetry in doing this," Mr. Giuliani said.

The Mayor appointed Howard Wilson, a former Commissioner of Investigation for the city, as the agency's chairman.

He served as a deputy mayor and Commissioner of Investigation under two mayors - one a Republican and the other a Democrat.

Other city commissioners can be dismissed without any reason, but to dismiss the Commissioner of Investigation, the Mayor must disclose his reason.

In 1955, he joined the Wagner administration as Commissioner of Investigation.

This arrangement is unique in the city, where most agencies have inspector generals that report to the Commissioner of Investigation.