An Israeli strike on a car in south Lebanon killed three children and their grandmother, a Hezbollah lawmaker from the area said, calling the attack a “dangerous development” for which Israel would pay a price, Reuters reports.

Lawmaker Hassan Fadlallah said the mother of the three children — girls aged between 8 and 14 — was wounded in the attack which struck the car as it drove between the villages of Aynata and Aitaroun near the Israeli border.

“The enemy will pay the price for its crimes against civilians,” Fadlallah told Reuters in a statement.