Hundreds of burial sites have been found on the site of a former residential school in Saskatchewan.
He said First Nations children in northern Manitoba were often forcibly removed from their homes to go to residential schools, adding that many of them were never able to return to their families.
The nuns taught at the Kamloops residential school and provided nursing and child-care services from 1890 until 1970, according to Sisters of St. Ann president Sister Marie Zarowny.
"A great deal of work has been done by First Nations and others to help identify remains and undocumented burial sites, but there is much more work that still needs to be done", Premier Jason Kenney said.
CTV News has reached out the Tk'emlúps te Secwe̓pemc for a response.
The Alberta government is contributing $8 million in grants to assist First Nations and Métis communities locate the remains and honour the memories of residential school victims.
The recent finding of what are believed to be 215 children's remains buried at the site of a Kamloops, B.C., residential school has magnified interest in the troubling legacy in both the US and Canada.
Perry Bellegarde, the chief of the Assembly of First Nations, said in a tweet late Wednesday that the finding at Cowessess is "absolutely tragic, but not surprising".
Chief Rosanne Casimir of the Tk'emlups te Secwépemc First Nation said at the time the discovery was an "unthinkable loss that was spoken about but never documented at the Kamloops Indian Residential School".
The Royal BC Museum says staff will work with the IRSHDC, as a neutral third party, to audit the SSA holdings after July 1, when the agreement will take effect.
"All archives from organizations that were involved with residential schools can play a role in the process of truth-finding and reconciliation", said Daniel Muzyka, acting CEO of the museum, in a statement Wednesday.
The history and dialogue centre and National Centre for Truth and Reconciliation will also work with the signatories to ensure transparency.