Switch used to trigger Delhi blast found, no breakthrough yet

New Delhi, Sep 10 (PTI) A switch believed to have been
used to trigger the briefcase bomb blast outside Delhi High
Court was found and two more men were detained in Jammu and
Kashmir on Saturday night but a breakthrough in the probe
still eluded investigators three days after the terror attack.
As investigators struggled to find conclusive leads,
India's Home Secretary R K Singh said security agencies were
attending to all the four emails purportedly sent by terror
outfits Harkat-ul-Jihad-al-Islami and Indian Mujahideen
claiming responsibility for the Wednesday blast in which 13
people were killed and 88 injured.
"We are not dismissing any email. We are investigating
each and every email we have got," he told reporters.
Singh however indicated there was a possibility that
this could be a prank being played by someone.
Sources said that a switch used in the bomb was found
by investigators. But, they said the timer device, if at all
used, is yet to be recovered.
Asked about reports that timer used to trigger the
blast had been found, Singh said it was not correct.
Sources said probe agencies were now looking into the
possibility of whether IM operatives carried out the attack
with the help of some other terror outfit.
They said the anti-terror squads of various states were
working on the case but none of them have got any substantive
leads.
J and K police on Saturday night detained two more
persons--both of them surrendered militants--for questioning
in connection with purported e-mail claim of HuJI claiming
responsibility for the blast.
Irshad Ahmed and Farooq Ahmed were picked up from
Kishtwar town and were taken for questioning, officials said.
The number of people detained in Kishtwar so far has gone up
to nine persons.
Police also seized the computers of the duo from
their houses for scanning in connection with e-mail.
The questioning of the seven men earlier detained in
Kishtwar continued for another day. They included the owner of
the cybercafe to which the HuJI email claiming responsibility
for the blast was traced.
The detained included a youth Sohaib whose parents
claimed that their son is innocent and "not involved at all"
in the blast. He has been detained for purportedly sending the
HuJI email.The investigators were also not ruling out the
possibility of IM cadres being helped by some other group on
the basis of a comparative analysis of July 13 Mumbai triple
explosions and the High Court blast since materials and
components found in the bombs were similar.
They also suspected that some of the 11 fugitive IM
operatives who were allegedly involved in 2008 Delhi serial
blasts, may have played a part in the High Court attack.
Four men--two each in Alwar in Rajasthan and Mumbai--were
detained by police since they resembled the sketches of
possible suspects released by the Delhi Police but they were
freed after questioning and getting their identities verified.
The two men detained in Alwar hailed from Anantnag in Jammu
and Kashmir.
Sources said an analysis showed that in Mumbai blasts,
ammonium nitrate was mixed with fuel oil and detonator had
traces of PETN while the bomb used to trigger the explosion
outside Delhi High Court had PETN as its major component with
few traces of ammonium nitrate.
Investigators said PETN is used mostly by terrorists in
Jammu and Kashmir and IM had earlier used ammonium nitrate for
making bombs.
"So now we are looking into the possibility of whether
Indian Mujahideen is being helped by some other group," a top
police official said.
Another source maintained that unlike this time, in
earlier cases there were ample evidence available for the
anti-terror squads to make out which IM modules were involved.