Two people have been arrested in connection with a plot to attack Taylor Swift’s upcoming concerts in Austria, officials confirmed on Wednesday, prompting increased security measures. Three suspects are still at large. The investigation began after Austria’s Army Intelligence Unit received a tip from a foreign agency. The information was then passed on to law enforcement, which led to a group of ISIS supporters who were preparing for an attack. The first suspect, a 19-year-old man, was arrested in the town of Ternitz in Lower Austria. He was said to have been “radicalized on the internet” and …