Another arrest has been made over the New Year's death of 46-year-old Kane Wayman in Christchurch.
A 41-year-old man arrested in Southland on Saturday has been charged with murder, the third person charged over the death.
Wayman was dropped off critically injured at Christchurch Hospital on New Year's morning and later died.
A police statement said scene investigations are continuing at two addresses including a gang headquarters south of the city.
"Anyone who has not come forward with information is asked to please contact police via 105 and quote file number 210121/6148.
"Information can also be provided anonymously via Crimestoppers on 0800 555 111."