Hezbollah’s chief media officer and prominent spokesman Mohammad Afif was killed by an Israeli strike in central Beirut on Sunday.
Mr Afif was visiting the Syrian Ba’ath Party’s Lebanese headquarters in the Ras al-Naba’a neighbourhood of the capital when it was hit by an unannounced Israeli bombardment, Lebanese media said.
Ali Hijazi, the Ba’ath Party’s leader in Lebanon, later confirmed that Mr Afif had been killed in the attack.
Video footage from the scene showed rescuers searching for survivors among the rubble of a collapsed building.
Lebanon’s health ministry said one person had been killed and three others injured.