Police say they now have a "clear picture" of what occurred on a Christchurch street where three boys were stabbed on Friday.
Detective Inspector Michael Ford said Monday police were "confident" they had a "clear picture" of what occurred on Medbury Terrace, Fendalton , on Friday night.
A 14 and 17-year-old were hospitalised with "serious stab wounds", while Zion Purukamu , 16, died.
Ford said the progress came after a "large number of co-operative" people came forward.
The progress comes as Purukamu's family speak for the first time.
"Zion’s family would like to thank the wider Christchurch community for the support and aroha they have been shown over the past few days.
"This continues to be an extremely difficult time for them as they plan ahead for Zion’s funeral on Friday.
"At this time, they are requesting privacy to focus their efforts on the funeral preparations.
"They would like to thank those who have come forward to share information with police and encourage anyone who is yet to come forward, to please do so.
Police are yet to discover who fatally stabbed 16-year-old Zion Purukamu. (Source: Other)
Information can be provided via 105, quoting Operation Medbury, or anonymously through Crime Stoppers on 0800 555 111."
CCTV footage and cellphone images were now also being reviewed, Ford said.
"We would like to thank all of those people who acted on our request for information. This has proved to be extremely valuable."
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