The Supreme Court of Canada will not hear the extradition case of Abdullah Khadr.

The high court has dismissed the federal government’s leave-to-appeal application in the case of the younger brother of Omar Khadr, the last western detainee to be held at Guantanamo Bay.

Ottawa was appealing rulings by lower courts that prevented Abdullah Khadr from being extradited to the U.S.

The government had argued it was wrong to prevent an “admitted” terrorist from facing trial in the U.S.

However, the court ruled the U.S. had violated fundamental justice with its involvement in Khadr’s “shocking” mistreatment during his 14-months of detention in Pakistan.