Police believe the incident that led to the death of a man in Palmerston North on Sunday was gang-related.
A young father died after a shooting on Croydon Avenue in the suburb of Highbury.
A homicide investigation is underway and cordons remain in place at the property.
A scene examination is being carried out today.
Police acknowledged reports of gang tension in the Manawatū area and additional staff had been sent to Palmerston North to provide reassurance to the community.
"Police have no tolerance for the violence that played out over the weekend and we're working hard to find those involved and hold them to account," a statement said.
"Our community can expect to see police continuing to respond to any unlawful behaviour by anyone who believes that they are above the law."
Police asked anyone with concerns about firearms being held or used unlawfully in the community to contact them.
"Now is the time for cool heads and clear thinking, keeping everyone safe and allowing police to complete their investigation and apprehend those responsible for the senseless death of the young father.
"People can report any incident in which their safety or that of others is at risk by calling 111 immediately."
Anyone with information that could help in the investigation was asked to call 105 and quote file number 230806/2952 or by contacting police anonymously through Crime Stoppers on 0800 555 111.