Police in Austria have arrested a third suspect in connection with the foiled terror plot around Taylor Swift ‘s Vienna shows, previously scheduled for this week. Austrian Interior Minister Gerhard Karner confirmed that an 18-year-old was taken into custody on Thursday night in Vienna, according to AP . The suspect was allegedly in contact with the primary 19-year-old suspect, who was arrested on Tuesday.

Karner confirmed that investigators are currently scrutinizing the “networks” of the suspects. Karner added that the primary suspect and the 18-year-old who was arrested yesterday both pledged “oaths of allegiance” to the Islamic State group. “He had been in contact with the main perpetrator, but is not directly connected to the attack plans,” Karner said of the third suspect, according to AP .

“But, as was found out a few days ago, he took an oath of allegiance specifically to the IS on Aug. 6.” Two suspects, a 19-year-old male and 17-year-old male, were initially arrested on Tuesday.

Austrian officials said the terror plot was planned for either Thursday or Friday’s show and that the suspects’ aim was to “kill as many people as possible outside the concert venue.” Bomb-making materials were found at the home of the 19-year-old suspect, who officials say was inspired by Al Qaeda and ISIS. He was “clearly radicalized in the direction of the Islamic State and thinks it is right to kill infidels,” said Omar Haijawi-Pirchner, Austria’s head of th.