The author of a book on the murder of Feilding farmer Scott Guy says he does not believe Ewen Macdonald's lawyer, Greg King, killed himself because of a guilty conscience over his client's acquittal.
Mike White's book Who Killed Scott Guy? is a result of a year's investigation into the inquiry and the court case.
Mr King killed himself a few months after the court case.
On Saturday Morning, Mr White said he did not believe a rumour that Mr King's actions were triggered by a guilty conscience over the case.
He said he believed the jury made the right decision in acquitting Macdonald in July last year, but he did not single out anybody else as responsible.
Mr Guy's body was found in the driveway of his farm on 8 July 2010.
Macdonald was sentenced in September to five years in prison for arson, vandalism and killing calves, offences that were committed before Mr Guy was killed.
He will be eligible for parole from 7 December this year, after having spent 17 months in custody since being arrested and charged with murdering Mr Guy.
Mr White said there was likely to be strong opposition to an early release.