The Crown is to seek a retrial of the man accused of organising a cocaine importation that cost the life of his mother-in-law.
A jury at the High Court in Auckland deliberated for 17 hours over the course of three days in the case of Peter Phillip Leaitua, who denies the charge.
The jury of nine women and three men began deliberations on Friday afternoon and had asked a number of legal questions.
However, on Tuesday afternoon they told Justice Wylie they could not reach a unanimous decision or a majority decision of 11 to 1.
Justice Wylie thanked them for their efforts and discharged them.
Crown prosecutor Kieran Raftery told the court that he would be seeking a retrial.
Mr Leaitua is on bail and is due back in court later in July, when it is expected a fresh trial date will be set.