The Crown Law Office is to review a television programme in which a juror from David Bain's second trial was interviewed to see if it breached court rules.
The woman, whose name could not be published, appeared on Television New Zealand's current affairs programme Sunday.
In the programme screened on 18 November, the woman said the jury had not found Mr Bain innocent, they had simply decided that the prosecution had not proved beyond reasonable doubt that he killed his family in Dunedin in 1994.
She said some jurors broke the rules by making private visits to the crime scene and bringing outside material about the case into the jury room.
The juror said she didn't believe that David Bain should receive compensation.
Court rules forbid the photographing of jurors during or after a trial and while the woman's whole face was not shown in the programme, there was no pixillation of her image.
A Crown Law office spokesperson says they will review the programme to see if any contempt of court occurred.
David Bain spent 13 years in jail for the murder of his parents and three siblings and was acquitted at a retrial in 2009.