David Tamihere's lawyer explains path to pardon

Convicted double murderer David Tamihere is to seek a pardon from new Prime Minister Jacinda Ardern after the sentencing of a key witness in his trial for perjury. Witness C - who gave evidence against Tamihere at his 1990 murder trial, was sentenced to eight years and seven months for lying to the jury. Tamihere's lawyer Murray Gibson joins us to explain how they will seek the pardon.