Pakistan has identified the attackers and it got the transcripts of the conversation between one of them named 'Abuzar', and his handler, 'commander' Umar, the paper said. "Umar Adizai, also known as Umar Naray and Umar Khalifa,is a senior militant from the Frontier Region Peshawar," it said, adding that security officials believe he made the calls from Nazian district of Afghanistan's Nangrahar province.Officials said 16 top Taliban militants, including its chief Mullah Fazlullah, planned the Peshawar massacre that killed 148 people, including 132 students, in the worst terrorist attack in the history of Pakistan.