Saskatchewan Premier Brad Wall says he doesn't know how long any level of government can ignore something like the slaying of a 15-year-old aboriginal girl before looking at ways to prevent such deaths.

Tina Fontaine was found wrapped in a bag and dumped in the Red River in Winnipeg. Her death has prompted renewed calls for a public inquiry into the high number of missing and murdered aboriginal women.

Wall says provinces and aboriginal leaders back that call, even if the federal government isn't on board.

"I think when the provinces are united as we are, together with the national aboriginal leadership, I think there is momentum," Wall said Monday in a telephone interview with The Canadian Press.

"I think the RCMP have agreed in principle with the importance of an inquiry and I think there is momentum picking up.

'Ask every single question'

"And then you have the absolute tragedy that has been ... highlighted ... in Manitoba," Wall said.

"I don't know how long you ignore those kinds of things at any particular level of government before you want to ask every single question that you can possibly ask to make sure that it doesn't happen again."

In May, the RCMP issued a detailed statistical breakdown of 1,181 cases since 1980. It said aboriginal women make up 4.3 per cent of the Canadian population, but account for 16 per cent of female homicides and 11.3 per cent of missing women.

In Saskatchewan, native women make up 55 per cent of homicide victims — the highest per cent of all provinces. There were 153 aboriginal women murdered in Saskatchewan between 1980 and 2012, according to the RCMP report.

The federal government has firmly rejected an inquiry, saying it prefers aboriginal justice programs and a national DNA missing person's index.

Prime Minister Stephen Harper has said most cases such as Fontaine's are addressed and solved by the police. He added that it was important to keep in mind that the girl's death was a crime and not a "sociological phenomenon."

Inquiry on agenda for premiers, aboriginal leaders

The issue will be on the agenda when premiers and aboriginal leaders hold their annual meeting this week in Prince Edward Island.

"There will be a call for an inquiry and it looks like the federal government is just saying 'no,' so I'm not sure there will be progress there, but the discussions are always helpful," Wall said.

"The aboriginal leadership of the country puts these issues on the table and immediately I think premiers, provinces and territories start to look at ... what are we doing to respond to these things. It's (been) helpful to me in the past to come out of the meetings and talk to officials and say 'Where are we at?'

"We're making progress on some of the issues, but you know I think more can be done."