Police say they know how Paeroa pizza shop owner Jordan Voudouris was killed and are combing through CCTV footage for more clues.
Detective Senior Sergeant Michael Whitehead said interim post-mortem examination results had given a clear indication of how the much-loved 55-year-old had received the injuries that caused his death, though they are not saying how.
"This information may prove vital to catching the offender and solving this homicide so police will not be commenting on those details at this stage of the investigation.''
Mr Whitehead said Mr Voudouris' family had been kept informed and CCTV footage was the current focus of the investigation.
"Further examination of CCTV coverage in Paeroa shows a number of people walking or driving through the town during the late evening on Sunday and early morning on Monday.''