The airstrike took down an 8-story building in a densely populated neighborhood as Hezbollah members were meeting in the basement, according to Israel.

Israel launched one of its most intense bombardments against Hezbollah targets in Lebanon this year Thursday, hours after the militant group’s leader condemned deadly twin attacks that he said crossed “all the red lines.

Hassan Nasrallah said Israel will be punished for explosive attacks; meanwhile, Israel carries out more strikes

Hezbollah and Israel have traded blows in recent days, as the conflict has escalated with few off-ramps in sight to avoid total war.