US police are reporting the suspect allegedly shot his grandmother and girlfriend prior to a police pursuit through the city today.
The other man involved in the incident at a Himatangi Beach property is speaking to police, and has minor injuries to his hand.
The helicopter left Wanaka Airport around 1pm yesterday, headed towards Mount Aspiring National Park. The trip was expected to take 15 minutes.
Tamara Maree Schmidt had been assaulted by her partner, and was highly intoxicated, before being struck by a car on SH1 near Bluff in 2015.
Around a dozen clubs have had official letters saying the police want to reduce alcohol-related harm.