VIENNA, Austria - Three shows in Vienna by American mega-star Taylor Swift have been cancelled after Austria arrested a man in connection with an Islamist attack plot, the organizers said Wednesday. "With confirmation from government officials of a planned terrorist attack at Ernst Happel Stadium, we have no choice but to cancel the three scheduled shows for everyone's safety," Barracuda Music said on Instagram, adding that all would-be concert-goers would have their tickets refunded. — Agence France-Presse.