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.

CNN By Rhea Mogul, Aishwarya S. Iyer and Sophia Saifi, CNN New Delhi and Islamabad (CNN) — 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.

Pakistan called on Saturday for a "neutral" investigation into the killings of mostly Indian tourists in Kashmir that New Delhi has blamed on Islamabad, saying it was willing to cooperate and favoured peace.