23-year-old Mirza, who co-incidentally had survived another terror attack at Mecca Masjid in 2007, has become one of the prime suspects, informed police sources.
According to sources, Mirza informed cops that he had come to Dilsukhnagar to have a cup of tea around 6:30 pm when the twin blasts rocked the city.
It seems that police now are trying to investigate whether Mirza's presence at the two blast sites was merely a co-incidence or he had connections with the culprits.
Mirza, who resides at Kalapathar of old city and a shop owner, had lost one of his legs in the 2007 Mecca Masjid blast.
Thursday's twin blasts killed 16 and over 100 people were injured. Most of the deceased have been identified as young students. Dilsukhnagar is middle class locality with numerous coaching classes and cheap hotels. This was the reason why there were so many students in the area at the time of the blasts.