Hutt Valley Police and the family of Paul TeHiko are still seeking answers in relation to his death after he was shot earlier this year.
The 40-year-old builder was shot at his Wainuiomata address on Jack Vaughan Grove on March 7 and his shooter, or shooters, have not been found.
"We continue to explore the possibility that more than one offender was responsible," Detective Senior Sergeant Mike Sears said.
"I'm convinced that there are people out there who know what happened and are wrestling with their conscience. I urge them to do the right thing."
Family members of TeHiko released a statement today and say it is distressing knowing the people responsible are still at large.