Aug. 9 (UPI) -- Austrian Interior Minister Gerhard Karner on Friday announced the arrest of a third person in a terror plot to attack a Taylor Swift concert in Ernst Happel Stadium in Vienna. Karner told reporters at a Friday press conference that the person arrested is an 18-year-old Iraqi who had been in contact with the 19-year-old main suspect in the terror plot to attack the Swift concert. Advertisement He said the third arrested suspect was not directly involved in the terror plan, but