NEW YORK (AP) New York City's police unions are seeking to stop a federal monitor from overseeing the NYPD.

The Patrolmen's Benevolent Association filed motions Thursday in Manhattan federal court on behalf of four police unions. The Sergeant's Benevolent Association is also filing a similar motion separately.

If granted, they say the motions will allow the unions to have an active role in the appeal of a federal judge's stop-and-frisk decision.

The judge ruled last month that the Police Department's stop-and-frisk practice violated minorities' civil rights. She ordered a monitor to oversee changes to the policy.

PBA President Patrick Lynch says a federal monitor could directly impact the safety, day-to-day responsibilities and collective bargaining of the unions' members.