The suspects in the foiled plot to attack Taylor Swift concerts in Vienna earlier this month sought to kill “tens of thousands” of fans before the CIA discovered intelligence that disrupted the planning and led to arrests. That's according to the CIA's deputy director, David Cohen. He discussed the failed plot Wednesday during an intelligence summit in Maryland. Austrian officials say the main suspect was inspired by the Islamic State group. He allegedly planned to attack outside the stadium, where upwards of 30,000 fans were expected to gather, with knives or homemade explosives. Swift called the cancellations “devastating” but thanked authorities for saving lives.