India accused Pakistan of attacking three of its military bases with drones and missiles, a claim that Islamabad has denied.

Indian troops said it thwarted Pakistan's attempts to attack its bases in India's Punjab and Indian-managed Kashmir and Pathankot.

An explosion occurred in the Indian-managed Kashmir city of Jamu during a power outage in the area on Thursday night.

Pakistan's defense minister told the BBC they were not behind the attack.

“We deny that so far we haven’t installed anything,” Khawaja Asif told the BBC, adding: “We won’t strike and then deny it.”

Earlier on Thursday, India said it had attacked Pakistan's air defense and "neutralized" Islamabad to try to achieve military goals in India on Wednesday night.

Pakistan called the action another “act of aggression” after strikes on Wednesday against Pakistan’s targets and Pakistan-Amist Kashmir’s targets.

India's strike on Wednesday sparked calls from the international community to call for a downgrade, and UN and world leaders called for calm.

Attacks and incidents along the border have incited concerns about wider conflict between nuclear-weaponed countries.

It is seen as the worst confrontation between the two countries in two decades.

India said militant attacks on Indian-managed Kashmir attacks last month, which hit nine "terrorist infrastructure" sites.

Pakistan strongly denied India's claim that it supported the militants who killed 26 civilians in the mountainous town of Pahargam.

It was the bloodiest attack on civilians in the region over the years, causing tensions to soar. Most of the victims are Indian tourists.

Indian-managed Kashmir has seen decades of rebellious Indian rule that has claimed thousands of lives.

It was a flash point between the two countries since Kashmir was divided into independence after being divided into British India in 1947. Both claimed Kashmir and fought for it twice.

Calling for restraint around the world after India launched Operation Sindoor earlier Wednesday.

But on Thursday, both sides accused each other of further military action.

A Pakistani military spokesman said the drones sent by India had been engaged at multiple locations.

"Last night, India showed another kind of aggressiveness by sending drones to multiple locations," said Lieutenant Ahmed Sharif Choudhuri. "These locations are near Lahore, Gujilanwara, Chakvar, Rawalpindi, Atok, Bahavalpur, Miano, Joel and Karachi."

He said a civilian died in Sindh province and four troops were injured in Lahore.

The U.S. Consulate in Lahore told its staff to shelter in the building.

India said it has taken the latest action in response to Pakistan's attempt to "proceed many military goals with the north and west" overnight.

"It has been reliably understood that Lahore's air defense system has been neutralized," a Ministry of Defense said, denied that claim.

There is no independent confirmation of the two countries' incident version.

"Our intention is not an upgrade, we are just responding to the original upgrade," India's Foreign Minister Vikram Misri said at a press conference in Delhi later that day.

At the same time, the number of casualties continued to increase. Pakistan said 31 people have been killed since Wednesday morning, Pakistan and Pakistan-managed Kashmir were injured by Indian air strikes and Pakistan-managed Kashmir attacks and shot along the control line, Pakistan said.

Indian troops said the number of people fired by Pakistan in the disputed Kashmir region has risen to 16, including three women and five children.

India did not initially name any group believed to be behind the attacks in Pahargam, but on May 7 it accused Pakistan-based Lashkar-e-Taiba militants of the attack.

Indian police claimed that two of the attackers were Pakistani nationals, a claim that Islamabad denied. It said it had nothing to do with the April 22 attack.

In a late-night speech on Wednesday, Pakistani Prime Minister Shehbaz Sharif vowed to take revenge on those who died in India's strike.

He repeated Pakistan's claim that it shot down five Indian fighters, calling it a "frustrating reaction". India has not commented on the claim yet.

Following reports of an explosion in Chamu on Thursday, local media listed Indian military sources on Thursday, reporting that explosions throughout Chamu were also reported in the towns of Akhnor, Samba and Katua.