By Jonathan Samuels, Australia correspondent
A New Zealand girl repeatedly mistaken for missing Madeleine McCann has given police a sample of her DNA which will be sent to Scotland Yard.
The girl, who has not been named, is understood to have a similar eye defect to Madeleine, prompting members of the public to believe she is the missing child.
The DNA sample is a conclusive way of proving her identity, said Detective Senior Sergeant Kallum Croudis of Dunedin Police.
"The results of this process will not be known for some time," he told New Zealand newspaper The Southland Times.
On New Year's Eve police launched a five-day investigation when a retailer became suspicious of a man and a young girl, who bore a resemblance to Madeleine.
Kate and Gerry McCann say they will maintain their search for Madeleine However, they said they were "absolutely satisfied" she was not Madeleine, and it was not the first time she had been mistaken for the missing girl.
Madeleine was nearly four when she vanished from her family's Portuguese holiday apartment in Praia da Luz in 2007 as her parents dined at a nearby restaurant with friends.
Madeleine's parents, Gerry and Kate McCann, have never abandoned their high-profile campaign to find their eldest daughter, who would now be nine.
Sightings have also been reported in Sweden, Belgium and Australia.
It is not the first time a child has been DNA-tested in relation to the case of the missing British girl.
In 2011, a young girl spotted in India with a Belgian man and French woman was tested and was also found not to be Madeleine.
Brooklyn Metropolitan Detention Centre. Pic: Jim Henderson
French troops patrol the northern Mali town of Gao
Malian troops in Gao
French troops negotiate a road block on the airport road at Gao
Wheelie bins overflow on to the streets
A woman covers her face to cope with the stench of rotting rubbish
Waste has been piling up outside businesses
The strike is in its tenth day with little sign of a breakthrough in talks
The sprawling marble-furnished entrance to the mansion (pic: CBS 12 News)
It has three garages, a pool and backs onto a waterway (pic: CBS 12 News)
A young calf was seen nuzzling its dead mother
Thousands have gathered in the streets of Tunis to protest
Former president Zine al Abidine Ben Ali was ousted in the Arab Spring
Ashley Mills was badly hurt in the violence