Sources say in all likelihood the alleged Pakistani operative used easily available call spoofing software to make the conversation.
The software helps to mask identity of the caller with any number of his choice.
“During the course of the conversation, the officer who was on duty, gave some details about the deployment of the NSG team from Regional Hub Hyderabad at the blast site at Hyderabad,” said a NSG statement.
But the force also clarified that preliminary probe has revealed that no details about the blast or the post blast investigation were given to the caller, alleged to be an ISI operative Mohammad Tasleem.