Police are searching for a Maori or Pacific Islander who knocked a 66-year-old Chinese woman unconscious during a bag snatch less than 2km from where a woman was murdered in a similar incident in 2008.
In June 2008 Joanne Wang, a Chinese businesswoman, was robbed of her bag and fatally injured by the thieves' getaway vehicle.
On Saturday a 66-year-old woman suffered a head injury in a similar incident 1600m from where Mrs Wang was robbed.
The woman had been shopping with her 34-year-old daughter on Great South Rd in Manurewa.
Police said about 11.20am the daughter put her handbag on the passenger seat of her car. Seconds later, a "large male Maori or Pacific Islander" wearing black gloves and a long dark jacket reached in through the front passenger door and took the handbag.