The Israeli army announced on Saturday morning that it had killed Hezbollah leader Hassan Nasrallah.
In a statement published on Saturday, the Israeli army said it had "conducted a targeted strike on the Central Headquarters of the Hezbollah terrorist organization" saying that this was located under residential buildings in the Dahieh area of south Beirut.
It claimed that it had killed Nasrallah, who led Hezbollah for 32. Hezbollah has yet to issue any statement on the Israeli claims.
Israel launched airstrikes on Beirut's southern suburbs and other areas of Lebanon on Saturday, after launching a massive attack on Hezbollah's headquarters on Friday evening that appeared to be aimed at killing Nasrallah.
Israel hit Beirut with more than 20 airstrike before dawn on Saturday and more after sunrise. Smoke could be seen rising over the Dahieh area of Beirut, a Hezbollah stronghold.
Thousands of people have fled the area since Friday's attack, congregating in squares, parks and sidewalks in downtown Beirut and seaside areas.
Friday's attack was by far the most ferocious by Israel on the city during the conflict with Hezbollah that has played out in parallel to the Gaza war for nearly a year.
Israeli forces also carried out strikes in the Palestinian territory during the night, the Palestinian territory's civil defence agency reported.
Two people were killed and 11 were wounded in an air strike that targeted a house in the Nuseirat refugee camp, the civil defence agency said.