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

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.

The Lebanese army condemned Friday Israel’s airstrikes on suburbs of Beirut, warning that such attacks are weakening the role of Lebanon’s armed forces that might eventually suspend cooperation with the committee monitoring the truce that ended the Israeli war.