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, Austrian authorities said Thursday, and investigators found bomb-making materials at one of their homes. Officials said one of the two confessed to planning to 害羞草研究所渒ill as many people as possible outside the concert venue.害羞草研究所�

Three sold-out concerts were canceled a day earlier because of the plot, devastating Swifties from across the globe. Many of them had dropped thousands of euros (dollars) on travel and lodging in Austria害羞草研究所檚 expensive capital city to attend the Eras Tour shows at the Ernst Happel Stadium, which sat empty Thursday morning as media filmed outside.

Concert organizers said they stood behind their decision, saying they expected up to 65,000 fans inside the stadium at each concert and as many as 30,000 onlookers outside, where authorities said the suspects planned to strike.

Officials told reporters that the main suspect, a 19-year-old Austrian, began working on his attack plans in July, and just a few weeks ago uploaded to the internet an oath of allegiance to the current leader of the Islamic State group. He planned to use knives or homemade explosives.

害羞草研究所淗e wanted to carry out an attack in the area outside the stadium, killing as many people as possible using the knives or even using the explosive devices he had made,害羞草研究所� said Omar Haijawi-Pirchner, the head of the Directorate of State Security and Intelligence, citing the 19-year-old害羞草研究所檚 confession.

He was 害羞草研究所渃learly radicalized in the direction of the Islamic State and thinks it is right to kill infidels,害羞草研究所� Haijawi-Pirchner added.

The 19-year-old quit his job on July 25 and made the statement 害羞草研究所渢hat he still had big plans.害羞草研究所�

The foiled attack was planned for Thursday or Friday, according to Austria害羞草研究所檚 interior minister, Gerhard Karner.

Neither suspect appeared to have a ticket to any of the shows, he said.

During a raid of the main suspect害羞草研究所檚 home in Ternitz, south of Vienna, investigators found chemical substances and technical devices that indicated 害羞草研究所渃oncrete preparatory acts,害羞草研究所� said Franz Ruf, director general for public security at the Ministry of the Interior.

Authorities said they also found Islamic State group and al-Qaida material at the home of the second suspect, a 17-year-old Austrian. He was employed a few days ago by a company providing services at the venue for the concerts, and was arrested by special police forces near the stadium.

The 17-year-old, who has Turkish and Croatian roots and has so far refused to comment on the allegations, had broken up with his girlfriend recently, officials said, adding that both suspects had undergone clear social changes recently.

Both teens were arrested Tuesday. Neither害羞草研究所檚 name was released in line with Austrian privacy rules.

Karner, the interior minister, said that Austria害羞草研究所檚 intelligence service had worked closely together with foreign intelligence services to capture the two teens. He did not identify the services, but added that the help was needed because Austrian investigators, unlike some foreign services, can害羞草研究所檛 legally monitor text messages.

No other suspects are being sought, though a 15-year-old who had been in contact with both suspects was also interrogated by police, Karner said.

害羞草研究所淭he situation is serious. But we can also say: A tragedy was prevented,害羞草研究所� he said.

Concert organizer Barracuda Music said in an Instagram post late Wednesday that it had 害羞草研究所渘o choice but to cancel the three scheduled shows for everyone害羞草研究所檚 safety.害羞草研究所�

Barracuda said all tickets would be refunded. The same message was posted under the Vienna dates on Swift害羞草研究所檚 official website. Austrian rail operator OeBB in the meantime said that it would reimburse fans for train tickets that had been bought, but not yet used, to get to the concerts.

Swift has not spoken publicly about the plot or canceled shows. 害羞草研究所淭aylor Nation,害羞草研究所� a verified Instagram page widely believed to be run by her team, reposted the announcement from Barracuda Music in a 害羞草研究所渟tory,害羞草研究所� which is only visible for 24 hours. Her main account has not posted anything.

Last month, an attacker in England killed three girls and wounded 10 people in a knife attack during a Taylor Swift-themed dance and yoga class. Swift at the time said she was 害羞草研究所樅π卟菅芯克鶛completely in shock害羞草研究所櫤π卟菅芯克鶛 over the attack.

Europe is enamored with the American superstar, with the German town of Gelsenkirchen renaming itself 害羞草研究所淪wiftkirchen害羞草研究所� before its mid-July concerts.

Austrian Vice-Chancellor Werner Kogler wrote on social platform X: 害羞草研究所淔or many, a dream has been shattered today. On three evenings in Vienna, tens of thousands of #Swifties should have celebrated life together.害羞草研究所�

害羞草研究所淚 am very sorry that you were denied this. Swifties stick together, hate and terror can害羞草研究所檛 destroy that,害羞草研究所� Kogler added.

Austrian Chancellor Karl Nehammer on Thursday defended organizers害羞草研究所� decision to cancel the concerts, saying it was justified because the arrests of the suspects occurred too close to the shows, which were scheduled for Thursday, Friday and Saturday.

The Vienna stadium had been sold out for the planned concerts, Austrian news agency APA reported, with an estimated 170,000 fans expected for the concerts in Austria. Some who posted on X lamented months of now-wasted efforts to make friendship bracelets and pick out fashionable outfits for the performance.

Swift is expected to perform at London害羞草研究所檚 Wembley stadium in five concerts between Aug. 15 and 20 to close the European leg of her record-setting Eras Tour.

In 2017, an attack at an Ariana Grande concert in Manchester, England, killed 22 people. Suicide bomber Salman Abedi set up a knapsack bomb in Manchester Arena at the end of Grande害羞草研究所檚 concert as thousands of young fans were leaving. More than 100 people were injured. Abedi died in the explosion.

Swift害羞草研究所檚 biggest fear has always been that such large-scale violence could take place at her concerts, the superstar told Elle magazine in 2019 ahead of her Lover Tour, which was ultimately canceled because of the coronavirus pandemic. The attack at Grande害羞草研究所檚 concert, as well as a 2017 mass shooting at an outdoor country music festival on the Las Vegas Strip where 58 people were killed and 850 wounded, worried Swift as she prepared to circle the globe.

害羞草研究所淚 was completely terrified to go on (the Lover Tour) this time because I didn害羞草研究所檛 know how we were going to keep 3 million fans safe over seven months,害羞草研究所� she told the magazine. 害羞草研究所淭here was a tremendous amount of planning, expense, and effort put into keeping my fans safe.害羞草研究所�

An official inquiry reported in 2023 that Britain害羞草研究所檚 domestic intelligence agency, MI5, didn害羞草研究所檛 act swiftly enough on key information and missed a significant opportunity to prevent the bombing, the deadliest extremist attack in the United Kingdom in recent years.

Terrorism expert Magnus Ranstorp, based at the Swedish Defense University in Stockholm, told The Associated Press by phone that any mass public event constitutes a potential threat now, and noted that concerts, like that of Ariana Grande, have been targeted.

害羞草研究所淪o we shouldn害羞草研究所檛 be surprised that these extremely popular iconic popstars that attract a massive audience will also attract terrorists that want to create fear and destruction and mayhem, and they target these concerts symbolically, culturally. In some ways Taylor Swift 害羞草研究所� and all these Swifties 害羞草研究所� is culturally and symbolically representative of the United States. She害羞草研究所檚 an American artist and has a massive, massive following.害羞草研究所�

Dazio and Grieshaber reported from Berlin. Associated Press writers Jan M. Olsen in Copenhagen, Denmark; and Vanessa Gera in Warsaw, Poland, contributed to this report.

Philipp-moritz Jenne, Stefanie Dazio And Kirsten Grieshaber, The Associated Press