Israel’s military said it was targeting an underground drone facility in southern Beirut on Thursday, in one of its largest strikes on Hezbollah assets since a cease-fire was agreed to in November. The military said Hezbollah’s aerial unit was producing thousands of drones with help and funding frin Iran.

Israel warned on Friday that it would keep striking Lebanon until militant group Hezbollah has been disarmed, after hitting south Beirut in what Lebanese leaders called a major violation of a November ceasefire.

Israel launched its most extensive series of airstrikes on the Dahiyeh suburb of Beirut on Thursday, as well as Ain Qana in south Lebanon, stating it targeted Hezbollah drone production and storage facilities.