Police are narrowing in on a woman who could be the mother of the two children whose remains were found in suitcases in New Zealand.
The woman, a Korean-born New Zealander, is in South Korea, Seoul police have confirmed.
It is believed she arrived in South Korea in 2018 and had no record of departure since then, a police officer told Reuters.
Her whereabouts and whether she had other relatives with her when she arrived in South Korea were not immediately known.
"New Zealand police had requested confirmation whether the person who might be related to a crime case was in South Korea," the police officer said, adding that given her past address and age, she could be the mother of the kids.
The children's remains were found earlier this month after a family in Auckland purchased contents from an abandoned storage unit in an auction.
The family transported the goods to their home in Manurewa, where they made the grisly discovery.
The Manurewa family are not connected to the deaths and have since left Auckland, the New Zealand Herald reported.
Police believe the children were aged between five and 10, and had been dead for a number of years.
Last week, Detective Inspector Tofilau Faamanuia Vaaelua said the police investigation is still ongoing and investigators are working to determine the full circumstances of the children's deaths.
"The nature of this discovery provides some complexities to the investigation," he said.
"However, we are continuing to treat this matter very seriously and we are determined to hold the person, or persons, responsible for the deaths of these children to account."
He added that police knew the identify of the people who were renting the storage unit, and confirmed New Zealand authorities had commenced inquiries with overseas agencies.
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