Yasin Bhatkal the former boss of the Indian Mujahideen was adept in handling military grade explosives such as the TNT, C3 and C4. Apart from this he was a master at preparing bombs using the very easily available ammonium nitrate. He mastered the art of bomb making during the various ISI sponsored sessions that he attended at Karachi, Pakistan.
The ISI trained me so well that making a bomb had become child’s play for me, Bhatkal revealed during his interrogation. He was one of the best bomb makers for the Indian Mujahideen and his arrest in 2013 saw the outfit fall like a pack of cards.