In the complaint, Nadin said that he learned, while working as a detective
from 1981 to 1984, that Ryan and several other officers were implicated as ''being engaged in and or protecting illegal narcotics trade, prostitution, and . . . other illegal activities" in the township.
Nadin, along with three other township police officers, reported the information to the state police in November 1984, the complaint said. Nadin then worked secretly with the state police in their investigation of the matter until January 1986, the complaint said.
The complaint says the investigation resulted in arrests of several Maple Shade police officers. But township attorney John Harrington said that no arrests were made and that the state police investigation cleared Ryan and the department of all charges.
Nadin, who began working for Maple Shade as a patrolman in 1975, said in his complaint that Ryan demoted him from detective to patrolman within one week after he informed the chief of his work with the state police. Nadin contended that the demotion, which was effective Jan. 21, 1986, was in retaliation for his work with the state police.
A spokesman for Ryan said the chief would not comment on the case while it was in litigation.