Bryson Apo, 31, admitted that he gave the cockfight operators "inside information" about when police would raid the operation during the 2004 and 2005 cockfighting season.

U.S. District Judge Susan Oki Mollway scheduled the sentencing for May 29.

Apo, who remains free on bail, was among five police officers charged as a result of a wide-ranging FBI wiretap investigation. He is the second officer to plead guilty.

Glenn Miram pleaded guilty in December and is awaiting sentencing.

Apo pleaded guilty to the conspiracy charge that carries up to five years in prison, but he faces a lesser sentence under federal advisory sentencing guidelines.