New York/Washington (PTI): The US has encouraged India and Pakistan to "de-escalate tensions", reaffirming its commitment to cooperate with Delhi against terrorism and urging Islamabad’s cooperation in investigating the “unconscionable" Pahalgam terror attack.

Secretary of State Marco Rubio spoke separately with External Affairs Minister Subrahmanyam Jaishankar and Pakistan Prime Minister Shehbaz Sharif on Wednesday.

In his call with Jaishankar, Rubio expressed his sorrow for the lives lost in the “horrific” terrorist attack in Pahalgam that had killed 26 civilians, mostly tourists.

Rubio “reaffirmed the United States' commitment to cooperation with India against terrorism. He also encouraged India to work with Pakistan to de-escalate tensions and maintain peace and security in South Asia,” a statement issued by State Department Spokesperson Tammy Bruce said.

In his conversation with Sharif, Rubio spoke of the need to condemn the terror attack on April 22 in Pahalgam and urged Pakistani officials’ cooperation in investigating "this unconscionable attack."

He also encouraged Pakistan to work with India to de-escalate tensions, re-establish direct communications, and maintain peace and security in South Asia.

Rubio and Sharif “reaffirmed their continued commitment to holding terrorists accountable for their heinous acts of violence."

A press release by the Pakistan Prime Minister’s Office said that Sharif briefed the US Secretary of State on Pakistan’s perspective regarding recent developments in South Asia following the Pahalgam terror attack.

Sharif highlighted Pakistan’s “significant contributions” in the global fight against terrorism and claimed that the country has “sacrificed over 90,000 lives and suffered economic losses exceeding USD 152 billion”, the release said.

The prime minister claimed that “Indian provocations” serve to distract from Pakistan’s ongoing efforts to combat terrorism, particularly groups operating from Afghan soil.

Sharif also rejected India’s attempt to link Pakistan to the Pahalgam attack and reiterated Pakistan’s call for an impartial investigation. He also urged the US to press India to refrain from making “inflammatory statements”.

Sharif also brought up the Indus Waters Treaty, which he said is the lifeline for 240 million people, and claimed that it contains no provisions for unilateral withdrawal by any party.

Following the Pahalgam attack, the deadliest in the Valley since the Pulwama strike in 2019, India downgraded diplomatic ties with Pakistan and announced a raft of measures, including suspension of the Indus Water Treaty of 1960 and immediate shutting down of the Attari land-transit post.