Abu Jundal, who allegedly played a major role in the 26/11 attacks, is sharing vital information with Indian interrogators.
Here are the top 10 developments in this story:
Jundal has said he set up nine Facebook accounts while in Saudi Arabia in his own name (Zabiuddin Ansari; Abu Jundal was one of 10 aliases he used) to recruit young men for the Lashkar-e-Taiba.
Indian intelligence agencies were tracking his Facebook accounts and his online activity. After26/11, he says he was asked to travel to Saudi Arabia and reached there with a Pakistani passport. Online, he hunted for "talent" that could execute another big terror attack in India, planned for later this year.
However, two senior Lashkar commanders, Zarar Shah and Zaki-ur-Rehman Lakhvi had been arrested after 26/11, making it tougher for the terrorists to plan their mission.
Jundal appears tech savvy and used Google maps to show the exact location of the "control room" in Karachi. Jundal was stationed here for the first 24 hours of the terror attack in Mumbai. The control room, he has already said, was supervised by officers from Pakistani military intelligence agency ISI.
His online activity and calls he made to India for recruiting new trainees from Saudi Arabia were tracked by US and Indian intelligence officials. Both worked hard to convince Saudi authorities to deport Jundal to India.
Jundal has told interrogators that he had been asked by a man named Muzameel, also a 26/11 handler, to recruit young, poor Muslims from India. The plan was to move them to Saudi Arabia, and send them from there for training to Pakistan, before deploying them to India to launch terror attacks.
DNA and blood samples from his family members were allegedly sent to Saudi Arabia to prove Jundal was Indian and a terrorist who belonged originally to Maharashtra.
Pakistan has denied that it knowingly offered protection or residence to Jundal. It has asked India to submit more details to establish that he was helped by ISI or other officials. India has refused, because it says Jundal's Pakistani passport used by him to enter Saudi Arabia proves he was being helped by state machinery.
India also points to the fact that after Jundal escaped from India in 2006 to Bangladesh, he was able to enter Pakistan without any travel papers.
Jundal was wanted by India in connection with a huge amount of RDX and AK47s discovered in Aurangabad. That's when he skipped the country.
