The U.S. State Department said on Sunday Washington was in touch with both India and Pakistan while urging them to work towards what it called a "responsible solution" as tensions have risen between the two Asian nationsfollowing a recent Islamist militant attack in Kashmir, Reuters reported.

In public, the U.S. government has expressed support for India after the attack but has not criticized Pakistan. India blamed Pakistan for the April 22 attack in Indian-administered Kashmir that killed over two dozen people. Pakistan denies responsibility and called for a neutral probe.

"This is an evolving situation and we are monitoring developments closely. We have been in touch with the governments of India and Pakistan at multiple levels," a U.S. State Department spokesperson told Reuters in an emailed statement.

"The United States encourages all parties to work together towards a responsible resolution," the spokesperson added, according to Reuters.