The mystery behind the powerful explosion at the Delhi High Court has deepened further, with two more emails being sent in the name of the Indian Mujahideen threatening to carry out a terror strike in Ahmedabad.

Four emails, including one by Harkat-ul-Jihadi, claiming responsibility for the blast have so far been received.

The email, sent by address kill.india@yahoo.com to the official address of the Delhi Police said: “This is to inform you that we, Indian Mujahideen, claim the terror attack at the Delhi High Court. I just want you to pass a message to the Indian government that the next blast will be so cruel that you people won't be able to forget it for decades and if you are willing to know the next attack, it is 1,8,5,13,4,1,2,1,4. Till you come to know what it stands for, the next blast will be done. If you have any question, get back soon, because we do not have time for anything.”

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