A Southland stalker with "a concerning history of violent offending" will be behind bars until next year.
Nathan Boulter, 33, is serving a jail term of three years and two months after his incessant pursuit of a woman he met through a friend and for an ominous threat against her.
In July 2020, he was locked up after visiting her home, taking photos and, over the course of a single day, calling her 300 times and leaving more than 100 voicemail messages.
While serving his sentence, Boulter spoke to a prison officer about his eventual release.
"He said he was going to go back to Invercargill to strangle his ex-partner and once he has strangled her he can get on with his life," a police summary said.
The officer tried to dissuade Boulter but he underscored his intentions repeatedly.