An internal affairs official at Rikers Island is facing accusations that his subordinates secretly eavesdropped on New York City investigators.

A Department of Correction spokesman confirmed on Monday that Gregory Kuczinski (koo-ZIHN'-skee) was placed on restricted duty in response to the allegations.

In a statement, the city Department of Investigation accused Kuczinski of directing his staff to listen in on calls between the watchdog agency and confidential inmate informants. It said the surveillance continued despite a directive saying it should stop.

There was no immediate response to messages left on Monday for Kuczinski. He has told The New York Times he didn't do anything wrong.

The case is the latest setback for a sprawling jail facility plagued by corruption and violence.