Here’s the report in the New York Times. The suspect, a South Korean national with New Zealand residence, is accused of having murdered a Chinese woman in Shanghai in 2009. The previous New Zealand government, in power from 2008 to 2017, had twice tried to extradite him but been blocked by the courts. Now the Supreme Court has said (in a 3-2 decision after 15 months of deliberation) that extradition is permissible provided the government gets sufficient guarantees that the suspect won’t be tortured and will get a fair trial.
Here’s the decision — all 150 pages of it.