Indian and Pakistani forces have exchanged fire along the Line of Control in Kashmir as tensions spike after a deadly attack in the resort town of Pahalgam.

The exchange of gunfire adds a military edge to a crisis that was already moving quickly through diplomacy. Indian army sources told Al Jazeera that the Pakistani side initiated the shooting, while a Pakistani official in Pakistan-administered Kashmir confirmed that troops exchanged fire but did not say who began it. He said there was no firing on civilians.

The firefight comes after suspected rebels killed at least 26 people in Pahalgam, in the deadliest such attack in Indian-administered Kashmir in a quarter-century. A statement issued in the name of The Resistance Front claimed responsibility. Indian police have offered a reward for information leading to the arrest of three suspects linked to the group.

That attack triggered a sharp diplomatic chain reaction. India withdrew from the Indus Waters Treaty, while Pakistan paused a canal irrigation project and shut its airspace to Indian airlines. The tit-for-tat moves have pushed relations between the nuclear-armed neighbors to their lowest level in years.

Both governments are now signaling readiness for escalation while publicly denying the other side’s accusations. Pakistani Defence Minister Khawaja Asif strongly denied any Islamabad role in the attack and said accusing Pakistan would not solve the underlying problem in Kashmir. Pakistan’s Foreign Ministry said the country is ready to retaliate if India infringes on its rights and said the army remains prepared to defend sovereignty and territorial integrity.

India, meanwhile, is tightening security in the area. Army chief General Upendra Dwivedi visited Pahalgam to review arrangements, and Prime Minister Narendra Modi vowed to hunt down the gunmen to the ends of the Earth. Security agencies have reportedly stepped up checks and detentions, while residents worry about being caught in the crossfire.

The UN has called for maximum restraint. That warning matters because the border clash is unfolding between two states that have fought three wars and already operate under constant military suspicion. Even a limited exchange of fire can feed public pressure, harden political positions and raise the risk of a broader confrontation.

For now, the facts on the ground are still limited: shots were exchanged, the trigger was the Pahalgam attack, and both sides are trading blame. But the crisis is clearly no longer only about terrorism allegations or diplomatic retaliation. It has become a live military and political test in one of the world’s most dangerous rivalries.

The danger is that a border exchange can quickly become a political obligation for both sides. India faces domestic pressure to show it can respond decisively to the Pahalgam attack, while Pakistan is warning that any infringement on its territory or rights will meet resistance. That leaves room for miscalculation in places where military units are already close and public anger is high. Even if the current exchange remains limited, it adds another volatile layer to a crisis that has already moved from a terror attack to a broader state-to-state confrontation.