Tensions between India and Pakistan have escalated further after a top Pakistani official claimed to have “credible intelligence” that New Delhi will carry out a military action against Islamabad within the next two days.

The claim on Wednesday came as both the US and China urged restraint.

“Pakistan has credible intelligence that India intends carrying out military action against Pakistan in the next 24-36 hours,” Pakistan’s Information Minister Attaullah Tarar said in an unusual middle of the night post on X.

He did not elaborate on what evidence Pakistan had used to make the claim.

Tarar’s comments come just one week after militants massacred 26 tourists in the mountainous town of Pahalgam in Indian-administered Kashmir, a rampage that has sparked widespread outrage.

India has accused Pakistan of being involved in the attack, a claim Islamabad denies. Pakistan has offered a neutral investigation into the incident.

CNN has contacted India’s defence ministry for response to Tarar’s claims.

Kashmir, one of the world’s most dangerous flashpoints, is controlled in part by India and Pakistan but both countries claim it in its entirety.

The two nuclear-armed rivals have fought three wars over the mountainous territory that is now divided by a de facto border called the Line of Control since their independence from Britain nearly 80 years ago.

Last week’s attack sparked immediate widespread anger in India and Prime Minister Narendra Modi is under tremendous pressure to retaliate with force.

India conducted airstrikes inside Pakistan in 2019 following a major insurgent attack on paramilitary personnel inside Indian-administered Kashmir. It was the first such incursion into Pakistan’s territory since a 1971 war between the two neighbours.

The latest attack on tourists in Kashmir has sparked fears that India might respond in a similar way.

Modi vowed to pursue the attackers “to the ends of the earth” in a fiery speech last week. The massacre set off an escalating tit-for-tat exchange of hostilities between the two countries over the past week.

Pakistan’s Tarar on Wednesday claimed any “military adventurism by India would be responded to assuredly and decisively.”

US Secretary of State Marco Rubio spoke with India’s external affairs minister and Pakistan’s prime minister, urging the two countries to work together to “de-escalate tensions,” according to State Department transcripts of the two calls on Wednesday.

In his call with Pakistan’s Prime Minister Shehbaz Sharif, Rubio “spoke of the need to condemn the terror attack on April 22 in Pahalgam” and urged Pakistani officials’ cooperation in investigating the attack in the Kashmiri town. Rubio also encouraged Sharif to “re-establish direct communications” with India.

New Delhi is considered an important partner for Washington as it seeks to counter China’s influence in the Indo-Pacific region. Pakistan is also considered a key US partner.

China, which also claims control of part of Kashmir and has grown closer to Pakistan in recent years, has also urged restraint.

In the days after the Pahalgam attack, both countries swiftly downgraded ties with each other.

India cancelled visa of Pakistani nationals, and Pakistan responded with a reciprocal move. Both countries have told diplomats and citizens to return home before April 30.

India has also suspended its participation in a crucial water-sharing pact.

Islamabad has called any attempt to stop or divert water belonging to Pakistan an act of war.

This week, New Delhi and Islamabad have both been flexing their military might.

Pakistan shot down an Indian drone that was used for “espionage” in the disputed Kashmir region on Tuesday, Pakistani security sources told CNN.

Two days earlier, India’s navy said it had carried out test missile strikes to “revalidate and demonstrate readiness of platforms, systems and crew for long-range precision offensive strike.”

Tensions have been also been simmering along the Line of Control and gunfire has been exchanged along the disputed border for six straight nights.