In a landmark decision for New Zealand’s legal system, the Supreme Court has quashed David Tamihere’s convictions for the 1989 murders of Swedish backpackers Sven Urban Hoglin and Heidi Paakkonen.
The ruling, delivered today, concludes a decades-long fight by Mr Tamihere to clear his name. He was convicted in 1990 for the murders and spent 20 years in prison before being released on parole in 2010, all the while maintaining his innocence. The court found that the convictions amounted to a "substantial miscarriage of justice".
The case has been one of the most high-profile and contentious in the nation’s history. It centred on the disappearance of Mr Hoglin, 23, and Ms Paakkonen, 21, who were last seen alive in the Coromandel Peninsula in April 1989. The discovery of Mr Hoglin’s body in 1991 in a remote bush area confirmed the fears of a double homicide, though Ms Paakkonen’s body has never been found.
A case built on informant testimony
The original prosecution case against Mr Tamihere was largely circumstantial and relied heavily on the evidence of three fellow prison inmates, or jailhouse informants. These witnesses testified that Mr Tamihere had confessed the murders to them while on remand. There was no forensic evidence linking him to the crime, and the case's reliance on so-called 'jailhouse confessions' has been a source of legal debate and concern for many years.
Mr Tamihere was convicted by a jury in a high-security Auckland courtroom in 1990. Despite numerous appeals and maintaining his innocence from the outset, he remained imprisoned until 2010. His legal team continued to challenge the verdict, arguing that the evidence used to convict him was unreliable and that crucial information about the informants was withheld from the original jury.
The path to today’s historic ruling began with an application for the Royal Prerogative of Mercy, which led the-then Governor-General, Dame Patsy Reddy, to refer the case to the Court of Appeal in 2020 on the basis of new evidence. After the Court of Appeal dismissed the case, Mr Tamihere’s legal team made a final appeal to the Supreme Court, which heard the case last year.
'Substantial miscarriage of justice'
The Supreme Court’s judgment centred on new evidence presented by Mr Tamihere’s lawyers which fundamentally challenged the credibility of the original informant witnesses. The court agreed that this new information, had it been available to the jury in 1990, could have changed the outcome of the trial.
A key aspect of the new evidence concerned the psychiatric state of one of the main informants. Fresh expert analysis, unavailable at the time of the original trial, suggested the witness was a "pathological liar" with a history of providing false information to authorities in exchange for favourable treatment. Evidence was also presented suggesting there may have been collusion between the informant witnesses.
The Supreme Court ruled that the combination of this new material cast such doubt on the safety of the original verdicts that they could not be allowed to stand. The judgment effectively stated that the trial process had been critically flawed, leading to a substantial miscarriage of justice.
The problem with jailhouse informants
This case has once again thrown a spotlight on the controversial use of jailhouse informants within the justice system. Legal experts have long warned that such witnesses have powerful incentives to lie, often in hopes of receiving reduced sentences, financial rewards, or other benefits from the authorities. Several wrongful convictions in New Zealand and internationally have been overturned due to unreliable informant testimony.
The independent body established to investigate miscarriages of justice, the Te Kāhui Tātari Ture | Criminal Cases Review Commission, frequently deals with cases where witness reliability is a central issue. While not directly involved in Mr Tamihere’s referral, its existence underscores the acknowledged risk of wrongful convictions within the system. The ongoing scrutiny of such cases shapes how police and prosecutors approach similar evidence today, including those arising from incidents like recent firearm reports in central Auckland.
The complexities of city governance and official processes, whether in legal reviews or civic administration, remain a constant challenge, as seen in recent negotiations in other parts of the world, such as the appointment of a new city manager in Tacoma.
What happens now?
The Supreme Court's decision to quash the convictions does not equate to a declaration of Mr Tamihere's innocence. Rather, it invalidates the legal basis upon which he was found guilty. Following this ruling, the case is now in the hands of the Solicitor-General, who must decide whether to pursue a retrial.
This decision will involve weighing several factors, including the significant passage of time since 1989, the availability and reliability of any remaining evidence, and whether a fair retrial is possible after more than three decades. The public interest in pursuing a new trial will also be a major consideration.
For now, the decision represents a monumental victory for David Tamihere and his supporters. The final chapter in this long and painful saga now rests on the Solicitor-General’s upcoming decision on whether to close the case for good or attempt to try it once more.
