Pakistan and India on Friday exchanged lists of nuclear installations and facilities despite tension over the Mumbai attacks, which has broken dialogue process between the two countries, Pakistan's Foreign Ministry said.

Both countries exchanged lists of nuclear installations and facilities on the first day of every new year under an "Agreement on the Prohibition of Attack against Nuclear Installations and Facilities" initiated in 1988 and came into force in January 1991.

"The Governments of Pakistan and India today exchanged lists of their respective Nuclear Installations and Facilities in accordance with Article-II of the Agreement on Prohibition of Attack against Nuclear Installations and Facilities between Pakistan and India of 31 Dec. 1988," a Foreign Ministry statement said.

The ministry handed over the list of Pakistan's nuclear installations and facilities to an officer of the Indian High Commission in Islamabad at the Foreign Office at 11 a.m., it said.

The Indian side handed over their list to an officer of Pakistan High Commission at the Ministry of External Affairs in New Delhi at 11:30 a.m., the statement said.

Pakistan and India conducted tit-for-tat nuclear tests in 1998, raising concerns over a nuclear race in the region.

Both countries have declared moratorium in nuclear tests and Pakistan on Thursday said it has no plan to sign the international test ban treaty.