In a press conference, authorities stated that a 19-year-old Austrian citizen who had become radicalized by ISIS propaganda online was arrested in Ternitz. At the beginning of July, he took an "oath of allegiance" to its current leader. A subsequent search and seizure of his home conducted by special forces produced chemical substances that are currently being evaluated. In the press conference, Franz Ruf, the director-general for public safety in the Ministry of the Interior, said the detainee had a particular focus on Swift's concerts.
A second arrest was made in Vienna, however police did not provide further details and said more would come "in the foreseeable future."
Swift's concert promoter confirmed the cancelation in a post which read: "Taylor Swift | The Eras Tour Vienna Shows Cancelled Due to Government Officials Confirmation of Planned Terrorist Attack. 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. All tickets will be automatically refunded within the next 10 business days."
Swift was slated to perform Friday, Saturday and Sunday night.
This is a breaking story, refresh for updates.