The man sent to jail for his part in the murder of Christchurch sex worker Mellory Manning has had his murder conviction quashed and will be retried.
Mauha Fawcett was jailed in 2014 in the Christchurch High Court after being found guilty of her murder.
Ms Manning was abducted by several Mongrel Mob members on the night of December 18, 2008.
She was abducted, raped and violently murdered over a drug debt.
Her body was found early the next morning in the Avon River after she was beaten and battered and stabbed at least three times in the chest.
Fawcett was trying out for the gang at the time and was highly unlikely to have been the main perpetrator during the attack, the Crown said, but had played a pivotal role in the operation.
The Crown said at the time he had helped the attackers by working as a lookout, using a scanner to watch for police and helping dispose of the body. At most he had joined in with the others, helping to murder Ms Manning as he worked to earn a Mob patch and permanent place in the gang.
Fawcett will reappear in court on September 1.