A day after the U.N. appealed for restraint following Tuesday's deadly attack in Indian-administered Kashmir, India reported an exchange of fire across the de facto border in the disputed region.

Troops from Pakistan and India exchanged fire in disputed Kashmir for a third night in a row, officials said, as relations between the nuclear-armed rivals plunged to their lowest level in years.

A deadly attack on mostly Indian tourists in contested Kashmir has sparked rising military tensions in the region. Indian and Pakistani troops exchanged fire for a third night in a row, and India has held naval drills.