Several people have been detained and questioned in connection with the terror strike, there is no clear evidence about the organisation or people involved in carrying out the bombing.

Briefing newspersons here on Saturday, the Home Secretary, Mr. R.K. Singh said that the investigating agencies were taking every e-mail very seriously, whatsoever received so far relating to Delhi High Court bomb blasts. He said that not a single e-mail has been dismissed though they may not have been sent by the people involved in the blasts.

Mr. Singh said that investigation is progressing on the basis of inputs received from Kishtwar in Jammu and Kashmir.

The investigators are baffled by four e-mails claiming responsibility for the High Court blast which killed 13 people and injured 91 others, many of them seriously.

The third e-mail, written in a coded message, was received by the Delhi Police on September 9 and it warned of an attack in Gujarat’s capital Ahmedabad. Gujarat, particularly Ahmedabad, was put on high alert after e-mail warning. The fourth e-mail, too, warned that Indian Mujahideen would target Ahmedabad.

Meanwhile, in Jammu and Kashmir, a college student was detained for sending the first e-mail.

However, the parents of the student, identified as Sohaib, claimed that their son was innocent and “not involved at all” in the terror attack.

The sketches released by Delhi Police have also failed to lead to any concrete clues. All those detained on the basis of the sketches have been found to be not connected with the blast case.

Two men – Abdul Gani (45) and Miyan Ahemad (35) – hailing from a village in Anantnag in Kashmir, were detained in Rajasthan’s Alwar on Friday evening after some people reported that their faces resembled the sketches of the blast suspects released by Delhi Police. But after their interrogation Rajasthan Police officials said that the duo was not involved in any terror activity.

Two persons were also detained in Mumbai on the basis of the sketches and questioned in connection with the High Court blast case but were later allowed to go.