A grieving mother has pleaded for those who know how or why her son died to talk to police.
The body of Damien Loder Allen, 33, was found in a house in the Auckland suburb of Hillsborough on September 24 after police responded to a 111 emergency call from the house.
Police say he died from "blunt force trauma" but also say the house had been cleaned and Damien's body had been moved before they arrived. They accused people in the house of withholding vital information and stonewalling their homicide inquiry.
Now Damien's mother has pleaded with her son's friends to tell police what happened at the house which was linked to the drug underworld.
Shirley Allen says her son was murdered at a place he called home, surrounded by people he thought were his friends, the Sunday News reported.
She says from her home in Mackay, Queensland, she needs to know what happened to him and know who is responsible.
She says the killer must be carrying a huge weight on their shoulders and they should tell the police what happened so the family can get some sleep and Damien can rest in peace.
Shirley told the newspaper there was further trauma when those she believes know who killed Damien arrived at his funeral and would not speak to police.
The dead man's sister, Kylee Fowler, says the family do not know when he died and need answers and justice.
Anyone with information should call Operation Ebb at (09) 302 6400 or Crimestoppers on 0800 555 111.