Punjab Police Superintendent of Police Salwinder Singh was on Monday put by NIA to exhaustive questioning for eight hours in connection with the Pathankot terror attack.
Senior Punjab Police officer Salwinder Singh, who was being probed by the NIA in connection with Pathankot terror strike, was given a clean chit by the National Investigation Agency after the scientific tests including the lie-detector test found nothing adverse against him, according to official sources.
Even as the anti-terror operations continue at the Pathankot Air Force base, the National Investigation Agency has started piecing together the puzzle over how the terrorists managed to sneak into the country and launch the brazen attack.
It was the last conversation which was made on the SP's phone, which is believed to be used by the terrorists to make calls to Pakistan.
The National Investigation Agency, which is probing the Pathankot terror attack case, on Thursday conducted searches at five places including office and residences of Punjab Police SP Salwinder Singh and his friends.
The National Investigation Agency handed over some more documents, including DNA reports and call details of the four terrorists killed in the attack, to the JIT.
NIA was on Monday allowed by a special court to conduct a lie-detector test on senior Punjab Police officer Salwinder Singh in connection with the Pathankot terror attack probe.
The Pakistani JIT concluded its six-day discussions with NIA on the probe into the Pathankot terror attack even as the visiting officials recorded statements of witnesses.
Senior Punjab Police officer Salwinder Singh, who is being questioned by NIA in connection with Pathankot terror attack probe, will undergo a lie detector test next week after he gave consent for it.
The NIA on Tuesday summoned the caretaker of a shrine in Punjab which a superintendent of police rank officer had claimed to have visited before being kidnapped by terrorists who attacked the Pathankot Air Force base hours later.
Many are also stating that there were some clues and lapses, which could have avoided this entire incident from becoming a debacle.
Senior Punjab Police officer Salwinder Singh on Tuesday underwent a lie-detector test in connection with NIA's probe in the terror strike at Pathankot IAF base.
The NIA had on Tuesday said that it expected cooperation from Islamabad for tracing the perpetrators of the Pathankot attack, saying it was clear that the terrorists were from Pakistan on the basis of the calls they made.
Farmers' protest against the three farm laws passed by the Centre has entered its 23rd day on Friday. "We are preparing ourselves for a longer stay as our fight against black laws will continue. It's getting colder, so we're putting more tents," said a protester.
A route often used by drug smugglers was apparently followed by terrorists to infiltrate into the border state of Punjab and unleash the deadly attack on the Pathankot IAF base.
National Investigation Agency officials said that Salvinder Singh, his jeweller friend Rajesh Verma and cook Madan Gopal have been summoned for a routine questioning as the agency is preparing to receive a five-member Special Investigation Team from Pakistan on March 27.
"They had AK-47 guns and they threatened to shoot us...They were speaking in Urdu, Hindi," said the police officer, who was interrogated for about six hours by the National Investigation Agency on Monday.
After receiving sanction under Unlawful Activities (Prevention) Act, the NIA will name Azhar, his brother Rauf Asghar, and handlers of four terrorists -- Qashif Jan and Shaid Latif in the chargesheet to be filed soon, official sources said.
Some recoveries have been made which are being analysed, official sources said.
The five-member team will be given a detailed presentation before they visit the attack site on Tuesday.
A five-member JIT from Pakistan reached Pathankot on Sunday to carry out a probe into the attack at the IAF base at Pathankot.
The NIA on Monday registered a case to probe the conspiracy of Pakistan-based terrorist group, believed to be Jaish-e-Mohammed, behind the strike at the Indian Air Force base in Pathankot in Punjab.
This wireless set is similar to one recovered from the site of attack in Sambha on March 20 last year.
The special court issued the arrest warrant after weighing the evidence presented by the NIA.
India plans to provide the probe team from Pakistan access to all witnesses in the Pathankot terror attack case but not security personnel from the National Security Guard or the Border Security Force.
The terrorists who attacked the IAF base in Pathankot came in groups of four and two and the bigger group was ticked off by their Pakistani handler as to why they have fallen behind in reaching the target when their accomplices had already entered the complex.
Ahead of the visit of Pakistani Special Investigating Team, likely to take place in the last week of this month, the NIA sent the Letters Rogatory, a legal document sent through the special court asking details about the phone numbers dialled by the four terrorists.
The operation to fully sanitise the Pathankot Air base, which was attacked by six terrorists last Saturday, is "close to completion" with the personnel of the National Security Guard, the army and the Garud commandos of Indian Air Force undertaking the task on the sprawling complex.
The move comes barely a few days before the Special Investigation Team of Pakistan visits here to ascertain the facts of the case and investigation carried out by the NIA.
The NIA chief refrained from naming the terror group responsible for the attack.
The visiting Pakistani JIT will begin recording the statements of the witnesses in the Pathankot terror attack case from Thursday.
The JIT will be taken to only those areas of the air force station that were accessed by the terrorists, who attacked the base in the early hours of January 2 this year.
'The ISI is bound to exploit narcoterrorism.'
A news report in daily Pakistan Today quoted an unnamed JIT member to say that the attack was nothing but 'vicious propaganda' against Pakistan as Indian authorities did not have any evidence to back their claims.
'Pakistan has responded with appropriate contempt -- hrowing our national dignity into the waste paper basket.'
The Gurdaspur SP's jeweller friend Rajesh Verma said the militants who had abducted them were in constant touch with a "commander sahib" and called him at regular intervals.
The suspected Jaish-e-Mohammed terrorists dressed in army uniforms launched the attack with an aim of destroying the air base.