An Auckland teenager with a penchant for knives who stabbed a fellow partygoer to death over a kiss has been jailed for at least 11 years.
Theodore Derrick-Hardie was 17 when he stabbed Warren Rosillo at a party in Pakuranga last year.
He pleaded guilty to murder on the first day of his trial in July.
He was sentenced to life imprisonment at the High Court at Auckland on Friday and will spend at least 11 years in prison before being eligible for parole.
At an earlier court hearing, the Crown said Derrick-Hardie went to a party where he saw Mr Rosillo, 18, talking to a former girlfriend.
He and his former girlfriend had an argument where he accused her of being unfaithful. She reacted by kissing Mr Rosillo, who responded to the kiss.
Derrick-Hardie grabbed Mr Rosillo by the neck and stabbed him in the chest, face and stomach.
Mr Rosillo died at the scene.