Pakistan says Indian missile strikes have killed 19 people

India fired missiles into Pakistani-controlled territory in several locations early Wednesday, killing at least 19 people including a child, in what Pakistan’s leader called an act of war.

India said it struck infrastructure used by militants linked to last month’s massacre of tourists in the Indian-controlled portion of Kashmir.

Pakistan claimed it shot down several Indian fighter jets in retaliation as two planes fell onto villages in India-controlled Kashmir. At least three civilians were also killed in the region by Pakistani shelling, the Indian army said in a statement.

Tensions have soared between the nuclear-armed neighbors since the attack, which India has blamed Pakistan for backing. Islamabad has denied the accusation.