by Brian KNOWLTON WASHINGTON, United States (AFP) — The FBI said Sunday it was investigating a stabbing spree at a Minnesota mall as a “potential act of terrorism,” as local media identified the suspect as a 22-year-old Somali-American. Nine people were wounded Saturday in the attack in the city of St. Cloud before an off-duty policeman shot and killed the attacker.  A news agency with ties to the Islamic State group said the rampage was […]