New Delhi, Jan 21 (ANI): The Ministry of External Affairs (MEA) spokesperson Vikas Swarup on Thursday said India is closely following the investigations by Pakistan in connection with the Pathankot terror attack, adding that New Delhi expects robust action by Islamabad to bring the perpetrators to book. Swarup said the dates for the NSA-level talks, which were suspended in wake of the Pathankot attack, have not been decided yet. He added that the NSAs have not met but they have been in touch. Swarup further stated that India had shared with Islamabad credible evidence that establishes the attackers link to Pakistan.