Wing Commander Abhinandan Varthaman, who became the face and symbol of the biggest clash between India and Pakistan in many years, walked across the border just before 9 p.m. (16:00 GMT) on Friday in a high-profile handover shown on live television.

Shelling across the Line of Control (LoC) that acts as a de facto border in the disputed Kashmir region, a frequent feature in recent weeks, continued on Saturday.

Pakistan's military said on Saturday its air force and navy "continue to be alert and vigilant", while two of its soldiers were killed after exchanging fire with Indian troops along the Line of Control. India's military said on Saturday that Pakistan was firing mortar shells across the LoC.

Pakistan touted Abhinandan's return as "as a goodwill gesture aimed at de-escalating rising tensions with India" after weeks of unease that threatened to spiral into war after both countries used jets for bombing missions this week.

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Global powers, including China and the United States, have urged restraint to prevent another conflict between the neighbors who have fought three wars since independence from Britain in 1947.

Tensions escalated rapidly following a suicide car bombing on Feb. 14 that killed at least 40 Indian paramilitary police in Indian-controlled Kashmir.

India accused Pakistan of harboring the Jaish-e Mohammad group behind the attack, which Islamabad denied, and Prime Minister Narendra Modi promised a strong response.

Indian warplanes carried out air strikes on Tuesday inside Pakistan on what New Delhi called militant camps. Islamabad denied any such camps existed, as did local villagers in the area, but Pakistan retaliated on Wednesday with its own aerial mission, that led to both sides claiming to have shot down jets.

The standoff came at a critical time for Modi, who faces a general election that must be held by May and who had been expected to benefit from nationalist pride unleashed by the standoff.

Pakistani leaders say the ball is now in India's court to de-escalate the tensions, though the Pakistani army chief told top military leaders of the United States, Britain and Australia on Friday that his country would "surely respond to any aggression in self-defense".

REUTERS