Authorities said they arrested a 19-year-old, 17-year-old, and 15-year-old in connection with a planned attack at a Taylor Swift concert in Vienna.
Kevin Mazur/TAS24/Getty Images for TAS Rights Management
- Officials said a 19-year-old male planned to use knives and explosives at a Taylor Swift concert.
- He and another 17-year-old male are believed to have been radicalized by ISIS, authorities said.
- They were in contact with other people who knew about the attack, an Austrian official said.