The killing of Connor Morris is the sixth violent death to rock the West Auckland community in just over two months.
And it is the third time a particular area in Massey has been the focus of police investigating a suspicious death.
On May 20, Farhat Rana Malik and her teenage daughter, Sidra Noor Malik, were fatally stabbed in a domestic incident in Ranui.
Ishrat Mike Malik, 55, was charged the next day with the murders of his wife and daughter.
Just two days after the fatal stabbings, 23-year-old Josh Roach was shot dead following a dispute outside his home in Luanda Drive, Ranui.