A man convicted of drink driving who suffered fractured ribs and a broken collarbone in police custody has had his conviction quashed.
A just-released Court of Appeal decision also expresses concern that the man suffered serious injuries while unlawfully in custody, and suggests the case be referred to "appropriate authorities" for investigation.
Ragulan Yoganathan was prosecuted in the Manukau District Court in 2015 for driving under the influence of alcohol.
He was disqualified for six months from holding or obtaining a driver's licence.
He unsuccessfully appealed to the High Court, before taking the case to the Court of Appeal.
On the night he was arrested, police asked Yoganathan to undergo a passive breath test, which recorded a level of alcohol in excess of 400mcg per litre of breath, the decision says.
The legal limit is 250mcg.
When asked to accompany a police constable to the station, he "did not readily" comply, so was forcibly removed from his car and handcuffed.
He suffered a broken collarbone and three fractured ribs, but the constable said Yoganathan's injuries were of his own account.