Their base of operations was the World Gym in Lake Ronkonkoma, whose owner was also nabbed as a drug ring suspect, police said. "They all worked out at the gym ... and they would use a lot of steroids. They were fanatical about fitness," Boyle said.

Boyle spearheaded a two-year internal affairs investigation that has resulted in 14 arrests. The probe started with a tip that veteran Suffolk Police Officer Thomas Foley was snorting cocaine and involved undercover NYPD officers, police said.

Later, a city police sergeant and two state troopers were implicated in the ring. "They weren't just getting it for their own use, they were selling it," Boyle said. "When the undercover [cop] wanted to buy some drugs, he would go through one of the police officers."

Foley, of Harmon Place in Hauppauge, L.I., and New York City Police Sgt. Robert Grettler of Race Ave. in Medford, L.I., were each charged with criminal sale of a controlled substance. Both face up to life behind bars if convicted.

Foley's brother James, 25, a state trooper, also of Harmon Place in Hauppauge, is charged with conspiracy and faces up to a year in jail. Fellow trooper Michael Christy, 32, of Stuart Ave. in Amityville, L.I., is charged with criminal sale of a controlled substance and conspiracy. He faces up to seven years in prison.

Other charges against the four are expected to be presented to a Suffolk grand jury, Suffolk District Attorney Thomas Spota said. Officers who allegedly witnessed the cops' drug use face disciplinary action as well, he said.

With help from World Gym owner Thomas Newman, 29, of Coram, L.I., and at least nine other civilians, the cops routinely sold drugs in the gym, at Newman's Midnight Sun tanning salons in Lake Ronkonkoma and Bohemia, L.I., and at nightclubs across Long Island, police said.