The four Pakistanis whose antecedents the ATS has managed to trace so far are from the Panjab and Gujrat in Pakistan.
The first Pakistani involvement in the blasts came to light by sheer chance. Mohammad Riyaz Nawabuddin was intercepted at Kalachowkie with an imported pistol on August 24. When questioned, Nawabuddin pretended to be from Siwan in Bihar. It turned out that he was a resident of 4 WB, police station Matchiswala, district Vihari in Pakistan’s Panjab. His boss Abu Osama, who was killed in an encounter at Antop Hill the same day, was a resident of Char Chak in Faisalabad.