Here is a detailed timeline of the important developments in the matter of Jadhav so far.
Amid a diplomatic row over alleged links between Inter-Services Intelligence and terror groups, a top American Senator has said that the United States needs to have "all options" on the table if Pakistan does not abandon the policy of embracing terrorism as part of its national strategy.
Pakistan spy agency Inter-Services Intelligence was planning recruitment of retired Indian military personnel to penetrate into the system and then use them for its anti-India activities, according to Lashkar-e-Tayiba operative David Headley.
Indian Foreign Secretary Nirupama Rao will travel to Islamabad later this month to hold talks with her Pakistani counterpart during which India will raise the issue of nexus between Pakistan's Inter-Services Intelligence and the perpetrators of 26/11 attacks, as brought out by the trial of Pakistani-Canadian terrorist Tahawwur Rana in the United States.
As pressure mounted on Islamabad to move against the Haqqani network, accused by United States of carrying out a spate of attacks in Kabul, Inter-Services Intelligence chief Lt Gen Ahmed Shuja Pasha rushed to Washington to hold a quite meeting with the new Central Investigation Agency head Gen David Petraeus.
To regain support and assistance, "They (CIA) have to start showing respect, not belittling us, not being belligerent to us, not treating us like we are their lackeys," The Washington Post quoted the official, as telling a news agency.
The Inter-Services Intelligence should probe allegations of its involvement in the abduction and killing of journalist Syed Saleem Shahzad and stop interfering in affairs of the civilian administration, a noted columnist said on Wednesday in an open letter to the chief of the Pakistani spy agency.
Ilyas Kashmiri's death comes as a relief to security agencies across the world, especially India since he was obsessed with undertaking attacks on the Indian soil. His latest operation -- Ghazb-e-Hind aimed at unleashing a wave of destruction in India.
Pakistan's Inter-Services Intelligence had chalked out a "low-profile routine proxy operation" in India through the Lashkar-e-Tayiba but the plan was "hijacked" and turned into Mumbai attacks by an ex-Pakistan army major and terrorist Ilyas Kashmiri's men with Al Qaeda's blessings, according to a book written by slain journalist Syed Saleem Shahzad.
The verdict on Tahawwur Hussain Rana is expected by Wednesday. While India is eagerly awaiting the Chicago court's decision, investigators have chalked out a plan to ensure that a strong case is prepared against Pakistan and its Inter-Services agency in the 26/11 case. India may also push for Rana's extradition. Vicky Nanjappa reports
Pakistani senior journalist Syed Saleem Shahzad, who went missing on Sunday, is in the custody of Inter-Services Intelligence, according to the Human Rights Watch. He invited the wrath of the powerful intelligence agency after he wrote an investigative piece about the recent attack by the Al Qaeda on the PNS Mehran naval base in Karachi.The HRW has learnt through credible sources that Shahzad is in custody of the ISI.
The United States has told Pakistan in clear terms that it has to act against all militants operating inside its territory and Islamabad cannot 'pick and choose' among terror groups, Defence Secretary Leon Panetta said.
United States Secretary of State Hillary Clinton has not given clean chit to Pakistan's Inter Services Intelligence over Osama bin Laden's presence in the country, her spokesman said on Saturday.
Visiting Indian External Affairs minister SM Krishna has said the recent statements made by David Headley, one of the prime accused in the Mumbai 26/11 terror attack, are being keenly followed and assessed by New Delhi for its import in the larger context.
Mumbai attacks co-accused David Coleman Headley has testified that he received espionage training against India from Pakistan's spy agency Inter Services Intelligence.
"David Headley has only allayed our worst fears and whatever is being said at Chicago only confirms our suspicion," commented an official who is accompanying Prime Minister Dr Manmohan Singh to Addis Ababa.
The District court conducting the Mumbai attack trial in the United States on Wednesday ordered that some of the over dozen sealed documents presented in the court as key evidences be made public.
The Inter Services Intelligence was heavily involved in preparations for the Mumbai terror attacks, according to classified Indian government documents obtained by The Guardian newspaper
Clinching evidence of key Mumbai attack accused David Headley's links with the Inter-Services Intelligence and Jamaat-ud Dawa is provided by his diary, which contains telephone numbers of two Major-rank officers of the Pakistani Army besides some others who handled the 26/11 attackers.
Pakistan's spy agency Inter Services Intelligence helped terror group Lashkar-e-Tayiba to execute the Mumbai terror attacks, David Coleman Headley, a key 26/11 accused who pleaded guilty to laying the groundwork for the 2008 strikes, told a court in Chicago on Monday.
Suspecting that the Pakistan government and the Inter-Services Intelligence have backed United States in its operation against Al Qaeda chief Osama bin Laden, extremist organisations have decided to avenge the killing. There's no stopping the Taliban and more attacks similar to the one at the Karachi naval base are expected, fears the Pakistan media. Tahir Ali reports.
Moderate Hurriyat Conference Chairman Mirwaiz Umer Farooq may have had a secret meeting with the head of Pakistan intelligence agency Inter Services Intelligence Lt Gen Ahmed Shuja Pasha in Europe, although he denies that.
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India is unlikely to give any credence to Pakistan Inter Services Intelligence chief Ahmed Shuja Pasha's threat that any Abbottabad-like attack would invite a befitting response, calling it a "tall claim" to hide his own failure.
The success of Al Qaeda chierf Osama bin Laden in evading detection and arrest by the Pakistani security agencies for nearly six years since 2005 when he lived in a house near the Pakistan Military Academy in Abbottabad was the result of a comprehensive intelligence failure by all agencies responsible for the collection of intelligence inside Pakistan and not the result of a failure by the Inter-Services Intelligence ISI alone.
American nationals and relatives of those killed in Mumbai terror attacks want the confessed Lashkar-e-Tayiba operative David Headley to take the stand in a New York law suit they have filed against Pakistan's Inter-Services Intelligence for plotting the attack.
Pakistan's powerful Inter Services Inteligence chief Lt Gen Ahmed Shuja Pasha on Friday offered to resign after admitting failure over the United States raid that led to the killing of Osama bin Laden in Abbottabad.
Calling Pakistani intelligence's failure to detect Osama bin Laden's presence in Abbottabad a "massive slip-up," ex-President Pervez Musharraf has admitted that "rogue" members of the Inter-Services Intelligence and military may have helped the al-Qaeda chief hide in plain sight in the garrison city.
A former Inter-Services Intelligence official with close links to the Afghan Taliban has reportedly been killed nearly ten months after he was kidnapped by militants in Pakistan's restive northwestern tribal belt.
The United States administration is pushing for greater control over the investigation of any involvement of the Pakistani spy agency Inter-Services Intelligence in slain al-Qaeda leader Osama bin Laden's presence in Pakistan since 9/11, amid fears that Islamabad may not carry out a credible probe.
Khan's statement is significant because Pakistan had so far denied that it had any information about the hideout of Osama before he was killed in a covert raid by a US Navy SEAL team in Abbottabad, a garrison town north of Islamabad, on May 2, 2011.
Insisting that the Pakistani Army is supportive of a dialogue with India, former Pakistan Foreign Minister Khurshid Mahmud Kasuri said Prime Minister Manmohan Singh should visit his country to kickstart the peace process.
Pakistan on Thursday dismissed reports that Afghan Taliban chief Mullah Muhammad Omar was being treated in a Karachi hospital, with the help of officials of the Inter Services Intelligence, after he suffered a heart attack."This is hackneyed speculation with no substance whatsoever," said Foreign Office spokesman Abdul Basit.He said such reports were aimed at maligning Pakistan and creating misgivings.
Elusive Taliban leader Mullah Omar, one of the world's most wanted terrorists, was treated in a Karachi hospital with the help of Pakistan's spy agency Inter Services Intelligence after he suffered a heart attack, a private intelligence agency has claimed.
'But India, increasingly, is not that far behind, which is a story I never expected to tell.'
The case of Kashmiri separatist Syed Ghulam Nabi Fai, who has been charged by the Federal Bureau of Investigation of being an undeclared agent of Pakistani spy agency Inter Services Intelligence in the United States, has been referred to a grand jury which will determine if there is enough evidence for a trial.
The case of Kashmiri separatist Syed Ghulam Nabi Fai, who has been charged by the Federal Bureau of Investigation of being an undeclared agent of Pakistani spy agency Inter Services Intelligence in the United States, has been referred to a grand jury which will determine if there is enough evidence for a trial.
The arrest of Inter-Services Intelligence agent Ghulam Nabi Fai has left many red faces in India, some out of embarrassment, others out of anger.
Eminent lawmakers on Monday accused Pakistan of playing a 'double-game' with the United States on the war against terror and raised suspicion that its spy agency Inter Services Intelligence knew about Osama bin Laden's presence in the country.
Blaming Pakistan's Inter Services Intelligence for the killing of Osama bin Ladin, the Tehrike Taliban Pakistan has vowed to avenge the death the Al Qaeda chief. Both the United States and Pakistan are enemies, but Taliban's prime target is Pakistan, as without its help the West could not operate in Abbottabad.