Two men have been found dead at an upmarket address in Auckland's Mt Albert, and police say they are now talking to another man.
Police said two weapons were located at the house on Stilwell Road on the northern slopes of Mt Albert.
Detective Inspector Bruce Shadbolt said police were called to the house at 11.05am.
Police found one man's body in the driveway and the other man's body in the house.
A third man, who lived at the house, was helping police and no one else was being sought.
The dead men had not been identified, but it is believed they were Chinese.
Neighbours said they saw a man in blood-saturated pyjamas being led away by police. The man wasn't handcuffed.
Another neighbour said they looked like "pretty respectable people" and drove some expensive cars. They said a lot of people would come and go from the address.
A Toyota Rav4 parked on the street had also been taped off.
Former Labour Cabinet minister Michael Bassett, who lives next door to the house, said it used to belong to striptease parlour owner Barrie Cardon, who brought it from Sir David Henry.
After Cardon's death in 2005 the 3238 m2 estate, valued at $2.67 million, was sold to a developer who sold off the front title and the five-car garage was converted into a house.
The listing at the time described the property as: "Rarely available and jaw-droppingly beautiful, this stately 1920s home is the Golden Triangle's finest."
"Hollywood glamour meets genteel colonialism with sweeping lawns, park-like grounds, a colonnade entry, sculpted fountain and 180-degree harbour views."
Bassett, who has lived in the street for 36 years, said it was an old house and there was a fire of some substance underneath it about six months ago.