Assembly of First Nations National Chief RoseAnne Archibald asked the United Nations on Monday to launch an investigation into Canada's possible role in violations of human rights associated with residential schools, CBC Canada reports. More than 150,000 children attended residential schools in Canada from the 1830s until the last school closed in 1997.

In the latest federal budget, Ottawa set aside $10.4 million over two years for Justice Canada to appoint a special interlocutor to work with Indigenous Peoples to protect and preserve unmarked burial sites.

Justice Minister David Lametti said the interlocutor's work wouldn't be affected by a UN investigation.

Along with the UN, Archibald is pressing the International Criminal Court to launch its own investigation of Canada's residential school record for gross violations of human rights.