Investigations into the May 18 blast at the Mecca Masjid in Hyderabad have thrown up a Delhi link. The call details of a SIM card recovered from a second unexploded bomb at the blast site has revealed that a call was made to the Capital.
The call was made to a computer institute in Azadpur market. Hundreds of trucks from various states, including Kashmir, come to the market daily, making it important from the security viewpoint. "This is the reason why intelligence agencies and Delhi Police have especially deployed spotters and developed sources in the area," an intelligence official said, adding: "We are working on the Delhi angle."
The details also revealed that calls were made to Varanasi and Kolkata too.
The recovery of the SIM card and subsequent success in retrieving its details has been the only significant lead in the case for investigators so far. However, they are being cautious as this could be a diversionary tactic by the militants to throw the investigation off track.
It has already been revealed that the SIM card was bought in the name of one Babu Lal Yadav. "It is a Kolkata number. The card was bought on fake documents and once it was found they were not authentic, the card was deactivated," the official said.
Both bombs, the official said, were triggered by cellphones. The only difference was that the first was rigged to go off when someone called the number while the second was set to explode when the alarm went off.