Detective Senior Sergeant Mike Sears, in charge of the homicide investigation, said the TV appeal would add to extensive inquiries police had made in an effort to find out who killed Te Hiko.
"Someone knows something about what happened that night, and we need to hear about it.
"We want this investigation resolved to give some closure for the Te Hiko whanau."
Paul Te Hiko was working with his father on the Wise Street property development when his life was brutally cut short.
He suffered a fatal gunshot wound on the night of Wednesday, March 7. By the time emergency services arrived, the father of one had died.
Shortly after his death, his family made a plea through the Herald for anyone with information to come forward.
"We are deeply traumatised at this time and would like people to respect our privacy," the family said.
"All we ask is that, if you know anything that can help, that you come forward and speak to the police."
The case will air tonight on Police Ten 7 at 7.30pm, TVNZ 2.
