The woman, a Korean-born New Zealander, 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.
