The Indian military says Pakistani soldiers fired at Indian posts all along the highly militarized frontier in disputed Kashmir as tensions flare over attack on tourists.

Armed police and soldiers searched homes and forests for militants in Indian Kashmir on Friday and India's army chief reviewed security there after the killing of 26 men at a tourist site - the worst attack on civilians in nearly two decades.

Relations between India and Pakistan are cratering following a deadly militant attack in Indian-administered Kashmir that has sparked tit-for-tat reprisals and raised fears of another military escalation between the nuclear-armed rivals.