A Christchurch man serving a prison sentence for sexually exploiting young boys, was declined parole today.

The Parole Board found Cameron Stuart Hore, 30, still poses a high risk of sexual re-offending.

Hore was previously released on parole in October 2013, but returned to prison one month later after contacting one of his victims via text message.

Parole Board members said they considered this to be of significant concern.

The board noted that since his return to prison, Hore had not taken part in any further rehabilitation activity and his prison custody officer also reported he was known to be manipulative towards custodial staff.

Hore is serving a four year and one month prison sentence after he surfed internet chatrooms and Facebook, looking to sexually exploit boys as young as 11.

Posing as a young woman, Sarah Ruddenklau, he even promised to pay some teenagers as much as $6000 to meet up and have sexual relations with him.

After receiving sexual favours, he would refuse to pay the money.

When his victims chased payment, Hore threatened to expose their "dark secret" by telling friends and neighbours what they had done for money.

At sentencing in July last year, the judge described his crimes as "despicable acts".

The High Court in Christchurch heard the data entry operator's 11 victims -- all young males, aged 11 to 19 -- had "lived in fear" that Hore would circulate videos he claimed he had taken of them.

Even after he was arrested in January 2011, he continued his "highly premeditated and planned" cyber crime against five other youngsters.

Being profoundly deaf didn't stop the "reasonably sophisticated" offending, the Crown said during the trial.

Police analysed online chat logs and found 9306 entries between September 2009 and November 2010.

Data found on Hore's computer revealed 14 victims in April 2010 alone, with nine coming forward to help police track him down. The rest were too embarrassed to make formal complaints.

Justice Lang told Hore last July: "You were prepared to exploit young people for your own sexual needs.

"These young people consented because they needed the money. Your victims are angry at what has occurred -- they are angry at you, and angry with themselves."

Hore will appear in front of the Parole Board again in three months.

- APNZ