The strikes, which came after more than two dozen civilians were killed in a terrorist attack in the Indian side of the disputed Kashmir region, escalated a conflict between two nuclear powers.

The Indian military said early Tuesday it had launched strikes against Pakistan in retaliation for last month’s militant attack in Indian-administered Kashmir.

ISLAMABAD — 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.