The Korean-born New Zealand woman arrived in South Korea in 2018 and had no record of leaving since then, a police official told Reuters on Monday. 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 if the person who could be related to a crime case was in South Korea,” the officer said, adding that due to her previous address and age, she could be the children’s mother . The NZ Herald also reported that a source said a relative of the children was in South Korea. KBS, South Korea’s national broadcaster, reported on Monday that Interpol had asked South Korean police to trace the whereabouts of a woman. The report said the National Police Service confirmed he had entered South Korea and there was no record of him leaving the country. A police source told the broadcaster that local forces would not be able to try to locate the woman unless an arrest warrant was issued. Also on Monday, Hankyoreh daily, citing a source in the police’s international affairs department, said police could arrest the woman if Interpol issued a red notice. New Zealand police would not confirm whether they had approached Seoul police and declined to comment further on Monday, but previously confirmed they were working with Interpol. New Zealand police launched a homicide investigation in Auckland last week after the children’s remains were found by a family going through the contents of a storage locker they had bought sight unseen at an online auction. Police have repeatedly said the family that found the bodies was not connected to the deaths. At a press conference on Thursday afternoon, DI Tofilau Famanuia Vaaelua said a post-mortem examination showed the children were of primary school age – between five and 10 years old. “The bodies were hidden in two suitcases of a similar size … I believe the suitcases had been stored for several years,” he said, adding it was likely between three and four years. The occupants of the home who discovered the remains “are understandably distressed by the discovery” and had asked for privacy, Vaelua said.