Taylor Swift's three concerts in Vienna this week were canceled after the government confirmed a planned attack at the stadium, the organizer announced late on Wednesday (August 7). 

Mark del Rosario, a fan who had flown in from the Philippines to watch the show, told Reuters it was "heartbreaking" to hear the news.

Austrian police on Wednesday detained two people suspected of plotting attacks on concerts. Franz Ruf, director general for public security, said the suspect, an Austrian citizen, had pledged allegiance to Islamic state. Another suspect was later arrested in Vienna.

Earlier on Wednesday before the cancellation announcement, police had said the events would take place but with increased entry checks and personal searches, with deployment of special units including anti-terror and bomb disposal teams, advising the public to arrive early at the events.

(Production: Lisi Mandl, Dave Graham, Swantje Stein)