Cannibal suspect 'may have served up children' in pies

Police believe a US man alleged to be a child murderer and cannibal may have cooked the remains of his child victims before serving them to friends in pies, stews and burgers.

Montana detectives say Nathaniel Bar-Jonah, who has been charged with kidnap and murder, visited Alberta and Saskatchewan in the mid-1990s.

He has pleaded not guilty to kidnapping and murdering 10-year-old Zachary Ramsay.

Royal Canadian Mounted Police spokeswoman Heather Russell says officers are now investigating outstanding cases of missing children.