On June 25, 2021, the discovery of as many as 751 unmarked graves near the former site of Marieval Indian Residential School in Marieval, on the lands of Cowessess First Nation, was announced by Chief Cadmus Delorme.[15] A communal graveyard next to the school was first used in 1885, prior to the establishment of the school.[15] In May 2021, the Cowessess First Nation announced it would search the site using ground-penetrating radar, in collaboration with a group from Saskatchewan Polytechnic.[15] At the time, an estimated third of the graves were marked. The search was planned two years earlier, but delayed due to the COVID-19 pandemic. It started on June 1, and was expanded four times after anecdotes from elders that bodies had been buried past the school grounds.[16]