Sarah Moses, a Tasmanian local, and her son Jack were found tragically stabbed to death in their home on Saturday in which police are suspecting is a domestic violence incident.
Law enforcement have arrested a man, believed to be an extended family member, over the incident.
Kiribati Police claim the stabbing occurred between 5am and 6am on Saturday.
The 46-year-old had reportedly been working as a public servant her entire career and moved to the country to be the director of the Kiribati Institute of Technology. The organisation is funded by foreign aid programs in Australia.
Mrs Moses husband, Bryce Moses, posted an image of his wife and son on Saturday.
'May God Almighty blessed and showers you with his love in his Kingdom RIP Sarah n Jack,' one commenter wrote.
'#RestInLoveSarahandJack Stay strong Taina, much love to you bro,' another posted.
Jenny Gale, secretary of the Tasmania Department of Premier and Cabinet, said: 'She was a much loved and respected colleague. This will come as shocking news to many in our community and our thoughts are with her family and friends.'