"A report has been submitted by the committee on the tunnel digging case," Principal Home Secretary S K Nanda told PTI today.
"Though I have not gone through the report, the probe focused on negligence of prison authorities, as terrorists were able to dig a 214-ft tunnel without their knowledge," Nanda said.
On February 10, jail authorities had stumbled upon a 214-ft long tunnel allegedly dug by 14 of the Ahmedabad serial bomb blasts accused inside Barrack Number 4, known as 'Chhota Chakkar', of the Sabarmati Central Jail, to escape.
The committee was headed by senior IAS officer M S Dagur, IPS officer Shivanand Jha and state Forensic Science Laboratory (FSL) director J R Vyas.
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It studied various reports submitted to it by the jail administration, police, FSL and Anti-Terrorist Squad (ATS) in connection with the tunnel digging case, a home department source said.
After the revelation of the tunnel, the state government suspended two jail officers. The crime branch, which is investigating the case, has carried out custodial interrogation of 14 of those involved in the serial bomb blasts case.