A fourth person is facing charges in relation to the homicide investigation into the death of Benjamin McIntosh.
Detective Senior Sergeant Tim Williams said a 59-year-old woman has been charged with perverting the course of justice and was due to appear in Waitākere District Court on June 28.
McIntosh, 36, was found in a critical condition in his car with a gunshot wound at Harold Moody Park in the Auckland suburb of Glen Eden on June 3.
The father of one was taken to Auckland Hospital in a critical condition but later died, surrounded by family and friends, after his life support was turned off.