Former NSW Labor minister and child sex offender Milton Orkopoulos has been caught using drugs behind bars, even though they were a key feature of his crimes.

The 62-year-old, who served as the Aboriginal affairs minister under then-premier Morris Iemma, plied multiple young, male victims with cannabis, heroin and alcohol before sexually abusing them between 1995 and his arrest in 2006.

Milton Orkopoulos will have to wait for two weeks to hear if his parole application has been successful. Credit:AAP

In submissions urging the State Parole Authority to keep him locked up for the entirety of his jail term of 13 years and eight months, lawyers on behalf of the NSW government said Orkopoulos used his "position of esteem" to gain the trust of his victims, aged between 15 and 20.

"One victim was introduced through his family's association with the Labor Party, whilst another took up an offer by the offender to do work experience in his office," the submissions say.