First Nation sues Alberta, Canada over impacts of oil sands, industrial development

Mikisew Cree First Nation Chief Billy-Joe Tuccaro announces a lawsuit against the governments of Alberta and Canada over the impacts of oil sands and industrial development in northeastern Alberta during a news conference in Edmonton, Alta., on May 12, 2026. (Darcy Seaton / CTV News Edmonton)

A First Nation is suing the Canadian and Alberta governments, alleging oil sands and industrial development in northeastern Alberta has infringed on treaty rights, and harmed the local environment and communities.

Mikisew Cree First Nation is located on the Peace-Athabasca Delta, one of the world’s largest inland freshwater deltas, in Treaty 8 territory.

“For generations, we have relied on the Peace-Athabasca Delta for hunting, trapping, fishing and practicing our culture and our way of life. Those rights were promised and protected under Treaty 8, but over many decades, the pace and scale of industrial development has dramatically changed our territory,” Chief Billy-Joe Tuccaro said at a news conference in Edmonton on Tuesday.

“Our nation is downstream from one of the largest industrial developments in the world and our people are living with the consequences. We have seen impacts to wildlife, the lands and waters that our people depend on for our ability to safely and meaningfully practice our traditional way of life. Our community has experienced alarming health impacts, including elevated cancer rates.”

He added, “This lawsuit is not about one single project. It is the cumulative impacts of decades of industrial approvals and the failure of Alberta and Canada to properly assess and manage those impacts.”

Mikisew Cree First Nation says it wants “enforceable mechanisms and thresholds” to manage the impacts of industrial development.

The statement of claim was filed in the Alberta Court of King’s Bench.

This is a breaking news story. More to come…