The 19-year-old Jaish-e-Mohammed terrorist who killed more than 40 CRPF jawans in the worst-ever attack on security forces in Jammu and Kashmir had a long history of participation in stone throwing and protests. Police sources say Adil Ahmed Dar disappeared in March last year and joined Pakistan-based terror group Jaish-e-Mohammed. At Gundbal village in Pulwama, just 10 kilometres from Thursday's blast site, there is a sense of disbelief in the Dar family over the transformation of their teenage son into a suicide bomber. The father of the terrorist, Ghulam Hassan Dar, said his son suddenly disappeared from home during the middle of his board exams last year.