A family member of the victim received bite wounds on the leg when he went to the woman's aid. The wounds on his arms were inflicted by the same dog a week earlier.

A Porirua woman received head, face and body injuries after her own pitbull viciously attacked her in her own home.

Another family member in the Astrolabe Street house in Porirua was attacked by the dog last week and sports defensive injuries on both his forearms.

He also sustained a bite wound to his leg in the Monday attack as he went to the woman's aid, which happened around midday.

KEVIN STENT/STUFF Police attended the scene of the Astrolabe Street, Porirua attack on Monday.

Just five minutes before the mauling the woman - in tears - had been discussing how the dog should be put down, to protect the safety of the family, which includes young children.

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The man said he had previously asked the police to shoot the dog, which is understood to have been put down today.

KEVIN STENT/STUFF A family member of the victim shows defensive injuries after being attacked by the same pitbull a week before Monday's mauling.

A police spokesman said the woman had been taken to Wellington Hospital with serious injuries.

Porirua City Council animal control officers were called to the property and impounded the dog, he said.

More to come.