An unconscious man was found on Queen Street in Lac La Ronge First Nation shortly after midnight on June 14, according to a press release.
Officers said he displayed injuries consistent with being struck by a vehicle.
The man was pronounced dead on scene by EMS. His name was not released by police.
During the investigation, police said they received a report from a woman who claimed she had hit someone while driving on Queen Street.
Officers said they located her at a home along with a truck with visible front-end damage in the driveway. The woman was displaying visible signs of intoxication and was arrested, according to RCMP.
Sandra Halkett, 24, is facing a charge of impaired operation causing death.
A RCMP collision reconstructionist examined the scene on Queen Street and an autopsy is scheduled to take place on Tuesday in Saskatoon.
La Ronge is approximately 345 kilometres north of Saskatoon.