A federal grand jury has indicted a Honolulu Police Department major on charges of extortion, tampering with a witness and making false statements.

Carlton S. Nishimura, 55, of Waianae, surrended to federal authorities this morning and appeared before U.S. Magistrate Judge Kevin Chang this afternoon. He pleaded not guilty and was released on conditions set by the judge.

According to a three-count indictment unsealed today, Nishimura, who was a captain at the time, conspired with a woman to obtain money from an operator of an illegal game room in Honolulu in exchange for his cooperation from April 2004 to March 2006.

The indictment, issued Thursday, also alleges that Nishimura attempted to tamper with a witness in February 2009 by trying to persuade the witness to make false and misleading statements to the FBI. Nishimura was also charged with making false statements to FBI agents in connection with the investigation.