One person has been arrested after the death of 16-year-old Zion Purukamu at a party in a rented Airbnb home in Christchurch on Friday night.
A youth has been charged with murder and two counts of wounding and is due to appear in the Christchurch Youth Court on Tuesday.
Police said Zion's family had been advised of the arrest and they thanked the members of the public who had provided information so far.
"Operation Medbury remains an active investigation and police still want to speak to people who were at the party when the incident occurred," a police spokesperson said.
"Anyone with information that could assist our investigation or anyone who is yet to come forward is asked to contact police on 105 and reference Operation Medbury."