Pakistan’s defense chief warned of an “imminent” clash with India as a dispute over river water and blame for a terrorist attack last month in Kashmir escalates between the nuclear-armed neighbors.

India has alleged “cross-border” involvement from Pakistan in a terrorist attack that killed 26 men in the Indian-ruled part of Jammu & Kashmir on April 22nd. Pakistan denies any role and India has yet to present proof.

India fired missiles into Pakistani-controlled territory in several locations early Wednesday, killing at least eight people including a child, Pakistani authorities said. India said it was striking infrastructure used by militants.