Pakistan’s foreign ministry said late on Saturday that talks with India scheduled for Monday would “not serve any purpose,” given what it said were preconditions imposed by New Delhi, casting serious doubt over whether the planned dialogue would take place.

The prime ministers of the long-estranged neighbors agreed last month that their national security advisors would hold talks to ease tensions, which have mounted over the past year amid cross-border firing by troops and attacks by militants on targets in India.

In a war of words a day before Pakistani National Security Advisor Sartaj Aziz was to arrive for the talks in New Delhi, Indian officials said Islamabad was trying to sabotage talks and evade discussions on terrorism, while Pakistan said India had displayed a lack of seriousness.

India had insisted Mr. Aziz cancel an intended discussion with separatists from the Indian controlled part of the disputed region of Kashmir during his visit to New Delhi. India also said that discussions on the status of Kashmir, a territory claimed by both sides, should not be part of the talks.

India accuses Pakistan of supporting Kashmiri separatists as well as harboring militants who launch attacks on India. Pakistan denies these allegations, saying it too is a victim of terror.