Police investigating the death of Connor Morris are still unsure what weapon was used to kill him and today continued to speak with people who witnessed the incident.
The 26-year-old boyfriend of Paul Holmes' adopted daughter Millie Elder-Holmes was killed early on Sunday morning following a fight in Massey, West Auckland.
Today's scene examination on Don Buck Road saw a specialist group carry out a further search of two large bush areas and a stream running behind a block of hoses.
A number of items of interest have been located and are being forensically examined but police will not comment on what these items are.
Detective Inspector Greg Cramer says police appreciate the huge amount of public interest in the investigation.
"However, this is an enquiry that requires attention to detail to piece together the circumstances from a large number of witness accounts and evidence taken from the scene."
Morris was known to police and his father was a member of the Head Hunters motorcycle gang, and Morris himself was once a prospect.
The death notices for Morris in today's paper were marked with the gang's slogan HHFFHH - Head Hunters Forever Forever Head Hunters.
His body was being held at the Fight Club 88 gym, where the funeral will also be held on Thursday, the club reported on its Facebook page.
Morris' affiliations with the Head Hunter gang meant police would be prepared for any possible violent retaliation in response to his death, Police Association president Greg O'Connor said.
On Sunday Detective Inspector Greg Cramer said the incident was not gang-related and declined to comment on Morris' police history.
O'Connor said given the nature of the people involved police would be on high alert in case anyone associated with Morris sought retribution.
Morris and a group of about 15 people were walking to the service station to get refreshments when a fight broke out with another similar-sized group having a party on Don Buck Rd.
Morris sustained head injuries, inflicted by an unknown weapon, and later died on the way to hospital. No one had been arrested in relation to the killing.
Canterbury University sociology professor Greg Newbold said the Head Hunters were a highly organised gang and they would not take matters into their own hands as it was likely the police would arrest the person who did it.
However, it was likely that person would "get a hiding" in prison from people who were associated with Morris' friends and family, Newbold said.
Because the attack was not gang-related and did not appear to have anything to do with gang business the Head Hunters were unlikely to retaliate as a group, Newbold said, adding that rogue gang members or friends could still try and take matters into their own hands.
The possibility of a violent retaliation was explanation for the assault rifles carried by police guarding the scene yesterday, he said.
There was also likely to be a police presence at Morris' funeral and at court appearances of the people involved in the attack, as emotions would be running high and violence could break out, Newbold said.
Patched members of the Head Hunters gang were talking to police close to the scene on Don Buck Rd today.
Police said investigations into the homicide were ongoing.
O'Connor said West Auckland police hoped this latest incident in a string of violent incidents would put the focus on crime in the area and help the authorities get the resources they needed.