Lebanon’s Hezbollah said it had attacked an Israeli army position using explosive drones for the first time, prompting heavy Israeli shelling in an escalation of more than three weeks of clashes at the frontier.

The Israeli army said it was striking a series of Hezbollah targets in Lebanon following a number of launches towards Israel, in a post on social media platform X.

Lebanon’s National News Agency reported Israeli shells hitting various areas of the south along the border.

In a statement, Iran-backed Hezbollah said it had used two drones packed with explosives to attack an Israeli army command position in the disputed Shebaa Farms area at the Lebanese-Israeli border.

The attack comes a few days after Hezbollah said for the first time it had used a surface-to-air missile against an Israeli drone.

Hezbollah said the drones filled with “a large quantity of explosives” had attacked the headquarters of the Israeli battalion in the Shebaa Farms area, and they had hit their targets. Israel has held the Shebaa Farms, a 39-square-km area of land, since the 1967 Middle East war.

Hezbollah fighters have been exchanging fire with Israeli forces across the Israeli-Lebanese border since the Palestinian militant group Hamas and Israel went to war on October 7.