Austrian authorities have announced a third arrest in connection with the foiled conspiracy to attack three now-canceled Taylor Swift concerts even as disappointed fans charmed Vienna by trading friendship bracelets and singing the pop star’s songs in the streets. The main suspect planned to target onlookers gathered outside Ernst Happel Stadium with knives or homemade explosives during the concert on Thursday or Friday. Authorities say the scheme was inspired by the Islamic State group and al-Qaida. Swift is set to travel to London’s Wembley stadium for five concerts between Aug. 15 and 20 to close the European leg of her record-setting Eras Tour.

VIENNA (AP) — Police kept a watchful eye as hundreds of Taylor Swift fans gathered and sang her songs in the Austrian capital Thursday, their dreams of watching her perform live abruptly dashed.

Austrian authorities say both suspects in a foiled plot to attack Taylor Swift shows in Vienna appeared to be inspired by the Islamic State group and al-Qaida. They said Thursday that investigators found bomb-making materials at one of their homes. Officials said one of the two confessed to planning to “kill as many people as possible outside the concert venue.” Three sold-out concerts were canceled a day earlier because of the plot, devastating Swifties from across the globe, many of whom had dropped thousands of euros (dollars) on travel and lodging to attend the Eras Tour shows.