U.S. Secretary of State Marco Rubio said on X, opens new tab he was monitoring the situation closely, while adding that Washington would continue to engage the Asian neighbors to reach a "peaceful resolution,"
Reuters reports.
The State Department said Rubio spoke to the national security advisers of both nations, urging "both to keep lines of communication open and avoid escalation."
The Indian embassy in Washington said Ajit Doval, the Indian national security adviser, briefed Rubio about the military actions, which took place early on Wednesday in Asia.
In recent days, Washington urged the neighbors to work with each other to de-escalate tensions and arrive at a "responsible solution."
Top U.S. leaders, including Trump, offered support to India after the April 22 attack. American officials did not directly blame Pakistan.
Last month analysts said Washington may leave India and Pakistan on their own in the early days of the tension, in part because it has a lot to deal with in achieving diplomatic goals in Russia's war in Ukraine and Israel's war in Gaza.
India and Pakistan will figure out relations between themselves, Trump said on April 25: "They'll get it figured out one way or the other."
In recent days, the U.S. State Department has said it was in touch with both nations at multiple levels and Rubio also held telephone calls last week with them.
Both Hindu-majority India and Islamic Pakistan claim Muslim-majority Kashmir in full, with each controlling only part and having fought wars over the region.
India blamed Pakistan for the April 22 attack. Pakistan denied the claims and called for a neutral investigation.
