The case of the rogue NBA referee is going into overtime.

Feds are investigating up to five more people who netted bundles off bets from Timothy Donaghy, an NBA referee who pleaded guilty last August to betting on games he officiated over four years, sources said.

"There are people who made millions," said a source close to the case.

Sources also said Donaghy had been placing bets on games he officiated with other known Pennsylvania gamblers for years.

Thomas Martino, a low-level participant in the betting scandal, pleaded guilty to defrauding the NBA in Brooklyn federal court yesterday.

He admitted Donaghy, 41, would "provide him with the name of the team he believed was a good pick for betting purposes."

Martino would then tell another buddy and professional gambler, James Battista, Donaghy's game pick. Battista, 42, would allegedly place the bet. Donaghy was paid $5,000 for each winning pick, according to court papers.

"Mr. Martino allowed himself to be used by two people he considered to be very good friends he has known all his life," his lawyer, Vicki Herr, said outside court. "He's anxious to move and he has taken a step today to put this behind him."

Donaghy, Battista and Martino were classmates at a Springfield, Pa., high school.

Battista heard about Donaghy's racket and forced his way into the action in late 2006, according to court documents. Battista is slated to plead guilty on Monday.

Feds stumbled onto the betting scam through wiretaps being used in a massive investigation into the upper echelon of the Gambino crime family last year, sources said.

That probe resulted in the arrest of the family's acting boss, underboss and consigliere, and five dozen lower-level gangsters in February.

In his plea, Martino said Donaghy gave him a pick over the phone on Dec. 13, 2006, for a game between the Boston Celtics and Philadelphia 76ers that he officiated. The following day, Martino gave him a cash payment in Pennsylvania.

Martino said he got the name of another team from Donaghy on Dec. 26, and gave Donaghy a cash payment in Toronto on March 11.

Martino, of Marcus Hook, Pa., faces between 12 and 18 months in prison under the plea agreement.

He also admitted that he lied to the grand jury when he was asked about the betting scandal, but he did not have to plead guilty to perjury. His sentencing is scheduled for July 11.

Donaghy, who lives in Bradenton, Fla., faces up to 25 years in prison for conspiring to engage in wire fraud and transmitting betting information though interstate commerce. His sentencing is scheduled to take place May 30.

http://www.nypost.com/seven/04172008/news/regionalnews/5_new_dirty_players_in_ref_case_106860.htm