It comes as police have reportedly tracked down relatives of the youths living in Asia as they desperately try to solve the chilling mystery of how they ended up in the cases. 4 Police have traced relatives of the two children in AsiaCredit: NZ Herald 4 Police outside the property where the grim discovery was madeCredit: NZ Herald The remains of the two young children were discovered by a family sifting through the contents of an abandoned storage unit in New Zealand after winning it at auction. Police arrived at their Auckland home last Thursday after being called by the shocked buyers as neighbors reported a horrible smell coming from the house. An investigation into the killing began on August 12 and officers have now found the family of the two primary school children who live in Asia, the New Zealand Herald reports. Detective Inspector Tofilau Famanuia Vaaelua confirmed the children, aged between five and ten, also had relatives living in New Zealand. Officers say the family in New Zealand have yet to be identified. Vaaelua said: “I really feel for the families of these victims. “This is not an easy investigation. No matter how long or how many years you have been serving and investigating horrific cases like this, it is never an easy task. “The investigation team is working very hard to hold the person or persons responsible for the deaths of these children to account.” He said detectives were “still on an investigative mission and we still have a lot of unanswered questions.” Key clues to solving the case will include DNA testing, examining the toys and personal items found with the cases, working with Interpol experts and identifying who put the cases in the storage unit. The children – who Vaaelua said may have been in the cases for three to four years – have not yet been identified and their genders are unknown. Vaaelua confirmed that local police are cooperating with Interpol. Interpol is an international network of police forces in 195 countries. He added: “We have started investigations with foreign agencies. I can’t say anything more.” Three hearses were reportedly seen outside the property in Auckland as the remains were taken for examination. Vaaelua said he could not comment on the gender of the children – or whether they were related. Once the children are located, police said the priority will be to notify their next of kin. A necropsy is performed on the remains. Vaaelua added: “Many of us are parents and we have a job to do and we are doing our best to identify the victims. “What I can say is that we are making very good progress with the DNA investigations.” 4 Papatoetoe Safe Store in Auckland, New Zealand where the human remains came fromCredit: AFP 4 Detective Inspector Tofilau Famuaniya Vaaelua revealed that the bodies were two children