Two First Nations chiefs are calling on Prime Minister Mark Carney to apologize for saying he could “outlast” a First Nations woman who was protesting over mercury poisoning in her community.

Chrissy Isaacs, a Grassy Narrows woman suffering from mercury poisoning, was in Toronto on Monday to demand compensation from the provincial government for mercury contamination in her community.

The Dryden Paper Mill released thousands of kilograms of mercury into the community’s river system from the 1960s to 1970s, and community members are still dealing with the fallout today.

Carney made the comment about being able to “outlast” Isaacs after she and other protesters chanted and shouted during a news conference Monday with Ontario Premier Doug Ford to announce new funding for housing.

The chiefs of Grassy Narrows and Wabaseemoong First Nations are demanding that Carney apologize for his remark, saying they are “disgusted” and that he acted unprofessionally.

The Prime Minister’s Office says in a media statement Carney could not hear what the demonstrators were saying and that members of his staff spoke to the demonstrators to hear their concerns.

NDP MP Leah Gazan also called for the Prime Minister to issue an apology in a public statement today.

“I am disgusted by the conduct of Prime Minister Mark Carney and Premier Doug Ford,” Gazan said.

Gazan added the federal government has been fast tracking legislations on projects of national interest but have neglected respecting Indigenous people.

“These decisions weaken environmental oversight and ignore the constitutional protections affirmed in Section 35,” she said.

“Grassy Narrows deserves justice. It deserves clean water. It deserves full accountability from governments that have failed for far too long to uphold their obligations,” Gazan said.

–With files from Sydney Ko

This article has been updated with comments from MP Leah Gazan.