Senior Hamas official Saleh Al Arouri was among those killed on Tuesday night in an Israeli drone strike on Beirut's southern suburbs of Dahiyeh.
Arouri was a senior leader in Hamas's politburo and one of the founding commanders of its military wing, the Qassam Brigades.
Hamas confirmed Arouri's killing via the affiliated Al-Aqsa radio.
Lebanon's state news agency reported that the Israeli drone struck a Hamas office in Dahiyeh, leaving at least four people dead..
Lebanon's caretaker prime minister Najib Mikati condemned the explosion as a "new Israeli crime" and said it was an attempt to pull the country into war.


Merz unveils fresh military aid in Kyiv, says Germany won't be intimidated
Protests demanding Indian election chief resigns escalate
US Coast Guard finds debris from missing medical aircraft off Nantucket
Trump names intelligence chief as AI czar
Trump shares Republican senator's phone number in feud over time switch