UPDATED 12.21PM: The Parole Board believes the Sensible Sentencing Trust has no right to block Rod Petricevic's release from prison.

The Trust has appealed to the High Court in Wellington, trying to stop the former Bridgecorp director being released from jail on Monday.

Parole Board lawyer Francis Cooke QC said the Trust can only intervene if it's directly involved.

He said this appeal is based on individual circumstances, not a systemic failure of the Parole Board.

Justice Rebecca Ellis told the court she expects to make a decision this afternoon.