The Israeli military carried out strikes on Hezbollah “drone factories” in southern Lebanon and suburbs of Beirut on Thursday, as large plumes of smoke could be seen rising from the Lebanese capital.

The airstrikes on the southern outskirts of the Lebanese capital, an area where Hezbollah holds sway, were some of the heaviest since a U.S.-brokered cease-fire came into effect in November.

A series of Israeli strikes have targeted Beirut’s southern suburbs on the eve of the Muslim Eid al-Adha holiday, almost an hour after the Israeli army issued a forced evacuation order to residents in areas that it says held underground facilities used by the Lebanese group Hezbollah for drone production.