Armed police are standing guard at a property in the Auckland suburb of Manurewa, where a man was shot and seriously injured early this morning.
Emergency services were called and two ambulances arrived at a Gibbs Road address at 3.45am.
Armed police remained stationed at the block of flats where the incident took place about five hours later.
A St John spokeswoman said a man in his 40s had been taken to Middlemore Hospital in a serious condition.
When one of the residents living on the same area got home from a night shift, he saw throngs of police at the end of the quiet cul-de-sac.
"The whole War Memorial Park he said it was just flooded with police and it was taped off at the end of our driveway so anyone living further down Gibbs road than us wouldn't have been able to get through."
It comes less than 36 hours after a man was shot and died in the Auckland suburb of Ōtara.
That incident resulted in armed police guarding the scene all of yesterday.
A man has been charged with murder in relation to the Ōtara death.
Detective Inspector Tofilau Fa'a Va'aelua said there was nothing to suggest the shooting was in any way connected to the Ōtara incident.
He said police would be canvassing the area today.
"While we understand incidents like this can cause concern in the community we can assure you that this matter is being investigated thoroughly," he said.
Police would like to speak with anyone who was in the area at the time of the incident and noticed anything suspicious.
Police can be contacted on 09 261 1321 or anonymously via Crimestoppers on 0800 555 111.