India and Pakistan have exchanged lists of their nuclear installations and facilities as part of an ongoing agreement.
The Indian External Affairs Ministry said Tuesday that the lists were exchanged through diplomatic channels simultaneously in New Delhi and Islamabad under an agreement signed in 1988.
It was the 22nd such exchange under the deal that bans India and Pakistan from attacking each other's nuclear facilities. The longtime rivals have been trading lists on the first of the year since 1992.
India and Pakistan have fought three wars since they gained independence from Britain in 1947. The neighbors routinely test nuclear-capable missiles and generally notify each other about test dates.
Neither of the countries have signed the United Nations' Nuclear Non-Proliferation Treaty.
India and Pakistan on Tuesday also exchanged lists of Indians and Pakistanis in each other's prisons as part of an agreement signed in 2008. The prisoner lists are exchanged twice a year, on January 1 and July 1.