Doubt cast on German train attacker's nationality

German authorities cast doubt on Wednesday on whether a teenager who went on an axe rampage on a Bavarian train was really an Afghan refugee, saying he might have been from Pakistan. According to reports the teenager was believed to be a "lone wolf" attacker who appeared to have been "inspired" by the Islamic State group. Investigators were still trying to determine the true identity of the 17-year-old who was shot dead by police following the train attack in which he injured five people, two of them critically.