"With confirmation from government officials of a planned terrorist attack at the Ernst Happel Stadium, we have no choice but to cancel three scheduled shows for everyone's safety," Barracuda.music said in an Instagram post, adding that all ticket money would be automatically refunded.

Austrian police on Wednesday arrested two people suspected of plotting attacks on concerts, Director General of Public Security Franz Ruf said at a news conference on Wednesday evening.

"During the investigation, we identified preparatory actions and noted that the 19-year-old suspect paid particular attention to Taylor Swift's concerts in Vienna," Ruf said, adding that the suspect, an Austrian citizen, had pledged allegiance to IS.

Police have searched the home of one of the suspects in Ternitz, Austria, and are analyzing items in the house. Three Taylor Swift concerts are scheduled to take place in Vienna from Thursday to Saturday, with an estimated 65,000 people expected to attend each day.

Bui Huy (according to Reuters, CNN, CNA)