Pakistan’s air defense system shot down an Indian drone early Thursday in the eastern city of Lahore, according to Pakistani officials, as India evacuated thousands of people from villages near the two countries' highly militarized frontier in the disputed region of Kashmir.

Pakistan said India fired missiles at three air bases inside the country Saturday but most of the missiles were intercepted and that retaliatory strikes on India were underway. It’s the latest escalation in a conflict triggered by a massacre last month that India blames on Pakistan.