Here are the 10 latest developments in this story:
The Pakistani Joint Investigation Team, which includes an official of the country's Inter-Services Intelligence or ISI, entered the high security base from the back using a passage created for them.
It was the same area where six Pakistani terrorists climbed the wall before opening fire inside the base on January 2.
The sensitive technical areas of the base were blocked from view by white, red and yellow tents.
The Pakistani team "retraced the route of the terrorists," including the spots where they hijacked the car of a Punjab police officer and killed a taxi driver.
Opposition parties have accused the government of "surrendering to Pakistan" and having the "ISI investigate ISI".
Leading the AAP protest at Pathankot, Delhi minister Kapil Mishra alleged an "ISI-BJP coalition" and said: "The same people who have killed our people have come here...this is so shameful and disgusting."
Responding to criticism, Amit Shah, the chief of the ruling BJP, said today: "For the first time Pakistan has made serious effort towards investigation."
The National Investigation Agency has told NDTV that it will ask for access to Pakistani terrorist Masood Azhar, the Jaish-e-Mohammad chief India believes masterminded the attack.
Yesterday, the team held discussions with Indian investigators in Delhi. Sources say they neither contradicted nor objected to India's findings about how Jaish-e-Mohammed carried out the Pathankot attack.
Government says the access it has allowed the Pakistani officials will be reciprocal. In a six-hour presentation on Monday, India shared with the Pakistanis its findings linking Azhar and his brother Mohammed Rauf Asghar to the Pathankot attackers.
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