New Delhi, Jan. 2 -- India and Pakistan on Thursday exchanged lists of nuclear installations that cannot be attacked in the event of hostilities and lists of prisoners in each other's custody, against the backdrop of unprecedented strains in bilateral ties after a brief but intense conflict last May. The lists were exchanged a day after external affairs minister S Jaishankar briefly interacted with Pakistan's National Assembly Speaker Ayaz Sadiq in Dhaka, where they were representing their countries at the funeral of former Bangladesh premier Khaleda Zia. This was the first engagement between senior officials of the two sides since last year's four-day conflict triggered by India's military strikes on terrorist infrastructure in Pakistan. India and Pakistan exchanged the list of facilities covered under the Agreement on the Prohibition of Attack against Nuclear Installations and Facilities through diplomatic channels in New Delhi and Islamabad simultaneously, the external affairs ministry said. The exchange maintained a tradition going back to 1992 despite ties between the two neighbours being at an all-time low. Under the agreement, which was signed in December 1988 and entered into force in January 1991, India and Pakistan inform each other of nuclear installations and facilities to be covered under the pact on January 1 every year. This was the 35th consecutive exchange. India and Pakistan also exchanged, through diplomatic channels in New Delhi and Islamabad, lists of civilian prisoners and fishermen in each other's custody under provisions of the Agreement on Consular Access of 2008....