Iran’s foreign minister was in Pakistan on Monday to try and mediate in the escalation between Islamabad and New Delhi after last month’s deadly attack on tourists in the Indian-controlled part of Kashmir.

Abbas Araghchi’s visit was the first by a foreign dignitary since tensions flared in the wake of the April 22 massacre of 26 tourists, which India blames on Pakistan. Tehran has offered to help ease tensions between the nuclear-armed neighbors.

Pakistan’s military has been on high alert after Cabinet Minister Attaullah Tarar cited credible intelligence indicating that India could attack. Pakistan has denied any role in the massacre of mostly Indian tourists, and offered to cooperate with a credible international investigation. India has so far not accepted the offer and several world leaders have urged both sides to exercise restraint and avoid further escalation.