VIENNA — Organizers of three Taylor Swift concerts in Vienna this week called them off on Wednesday after officials announced arrests over an apparent plot to launch an attack on an event in the Vienna area such as the concerts.

Swift was scheduled to play at the Austrian capital’s Ernst Happel Stadium on Thursday, Friday and Saturday as part of her Eras Tour.

Event organizer Barracuda Music said in a post on its Instagram channel late Wednesday that “we have no choice but to cancel the three scheduled shows for everyone’s safety.” It cited government officials’ “confirmation” of a planned attack at the stadium.