A convicted killer has today admitted going on a prison rampage.
Bronson Kelekolio is serving a life sentence for the December 2012 murder of 22-year-old Ashburton woman Sina Nerisa Solomona.
He was 15 when he stabbed Solomona 14 times in a frenzied attack before slitting her throat with a second knife and sexually violating her.
In July 2014, he was sentenced at the High Court in Christchurch to life imprisonment with a minimum non-parole period of 14 years and six months after pleading guilty to her murder.
He was back in court today, after being charged with a prison disturbance on December 13 last year.