Austrian officials also say that investigators found chemical substances and technical devices in the suspects home.
He added that the alleged attack plans were pure fantasies of a man with apparent mental health issues.
When asked why his client made the pledge, Tomanek replied, Because he found it cool.
Police officers stand near gathering Swifties in ViennaAP Photo/Heinz-Peter Bader
Swift has not yet spoken out about the attempted attacks.
Security for the upcoming shows will be heightened and fans have been encouraged not to gather outside the stadium.