Stabbing rampage in Germany kills three, official says it was possibly terrorism ReutersGermany knife attack: Several people killed at ‘diversity’ festival Washington ExaminerAn attack at a festival in a German city kills 3 people and seriously wounds at least 5 The Associated PressGerman authorities say terror not ruled out in deadly stabbing attack The Washington Post15-year-old arrested in connection to horror knife attack in Germany that left 3 dead, several injured: authorities New York Post