Israel conducted an unprecedented airstrike on Beirut’s southern Dahiya district on Friday evening in what Israeli media described as an attempt to assassinate Hezbollah’s Secretary General, Hasan Nasrallah.

The strike targeted and leveled six residential buildings. The Israeli army’s spokesperson, Daniel Hagari, released a video statement shortly after the strike claiming that the buildings contained Hezbollah’s “Central Headquarters.” Lebanese media reported that over 10 Israeli missiles were dropped in less than three minutes on the complex, situated in the Haret Hreik area in Dahiya. The Israeli army’s radio said that Israeli F-35 fighter jets dropped 2000-pound bunker-buster bombs on the residential buildings.

Lebanese first responders continue rescue efforts to pull out survivors from under the rubble. As of the time of writing, the number of civilians killed has not been specified.

The Israeli army’s radio quoted a military source saying that any person who was present in the targeted buildings “will not come out alive.” The Lebanese Health Minister, Firas al-Abyad, said that some of the buildings targeted were “full of civilian residents.”