KEY POINTS:
A car registered to the aunt of slain twins Chris and Cru Kahui was found on a property raided yesterday by police seeking the killers of liquor store owner Navtej Singh.
Several people were taken from the house for questioning.
The silver Subaru Impreza - one of several cars at the Trimdon St, Manurewa, home - is registered to Emily Hepi and Pouaka Hepi, a former Black Power member.
Ms Hepi is the younger sister of the twins' mother, Macsyna King.
It is not known what connection the Hepis have to the Trimdon St address. Ms Hepi would not speak to the Herald yesterday.
Neighbours said police dressed in black, wearing helmets and carrying guns called over loud speakers as they stormed the dwelling - which locals say is a gang house - about 6.30am.
The house and several cars - including the Impreza and a white Mitsubishi Mirage - were cordoned off for most of yesterday.
Attention was paid to the Mitsubishi, which is similar to a white four-wheel-drive police say was seen leaving the Riverton Liquor Store after the killing on Saturday night.
Residents of two other homes visited by police said last night they were surprised to be caught up in the investigation, but happy to help.
One woman living on Shifnal Drive - who wanted to be known only as Lily - said she was woken by officers knocking on her door during the early-morning raids.
She said she had planned to buy flowers to take to Mr Singh's store yesterday, but instead she and her daughter Nikita, 17, were taken away and questioned.
Lily said she was asked if she recognised any faces on the video film or any logos on the clothing worn by the robbers. She believed her local knowledge - and her association with some people who were selling cannabis at Christmas time - might have led police to call at her home.
Lily said she was happy to assist police, but didn't believe she knew anyone involved. "They need to be caught," she said. "It could have been any of us in that shop."
A woman living on Balloch St said she believed police questioned her partner over any gang involvement - and his whereabouts on Saturday night - because he has facial tattoos. She said her partner was not in a gang, and he had been happy to help police.
Detective Inspector Jim Gallagher said last night no arrests had been made and the cordon at Trimdon St was part of "ongoing inquiries".
The Herald supplied police with the name of a possible suspect on Tuesday night but investigators were last night unable to say what had come of the tip.
Police said on Tuesday they believed the answers to the fatal shooting would be found in an area between four nearby streets.
Mr Gallagher said good information had been received from the public, including possible recognition of three men filmed by a security camera.
* The New Zealand Indian Central Association last night appealed to the offenders to give themselves up. It said it had full faith in the professionalism of the police officers handling the investigation and asked the community to provide full co-operation.
- additional reporting: Patrick Gower, Beck Vass