The suspect was identified as Francisco Oropesa, a Mexican national who immigration officials say had been deported from the US four times since 2009.

Police say they are investigating whether Sanderson might have also killed his brother and sustained injuries that might cause him to seek medical attention.

The brothers are suspected of murdering 10 people and wounding 18 more in a stabbing rampage that devastated an indigenous community in one of the deadliest attacks in Canada's modern history.