A homicide investigation has been launched after a 23-year-old man.
Emergency services were called to an address in Netherby about 11.45pm on Friday, where they were located.
He died at the scene a short time later.
Police have not made a weapon.
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Detective Inspector Michael Ford said police were making a "range of inquiries" to determine the circumstances of the 23-year-old's death.
Ford said it was understood there was a party at a Tinwald property in Ashburton on Friday evening where people were reportedly threatened.
A forensic examination of the scene was under way, and the man's body would undergo a medical examination on Sunday.
"Police are working closely with his family and providing support at this difficult time.
Offic Officers are also speaking to a number of people who were present at the time, Ford Ford said.
The property has been cordoned off and a scene examination is under way. A police tent has been erected outside a home on the corner of McDonald Rd and Princes St.
The man's body was expected to undergo a medical examination on Sunday, police said.
Jayden Shane Alexander was jailed last year for a minimum non-parole period of 11 years for stabbing Tainui James Wano.
However, Stuff understands a different family lives there now.
On Saturday morning several people, relatives, were sitting in chairs on the grass opposite the property.
Police markers have been placed on Princes St., along the grass, on the road and another marker is placed on a neighborhood's fence.
Anyone with information about the Tinwald party is urged to contact Police immediately by calling 105, or anonymously via Crimestoppers on 0800 555 111.
The Homicide Report, a Stuff data investigation, shows that at least 1112 people – 295 women, 619 men, 198 young people – have been killed in New Zealand since January 1, 2004.
New Zealand's homicide rate of 1.6 per 100,000 people is well below the OECD average of 3.6 per 100,000.