Saleh Al Arouri lived in Lebanon at the time of his death. He had been in the US list of terrorists since 2015.
1.2.23: Using a drone, the IDF killed senior Hamas leader Saleh al-Arouri and a number of aides as they were meeting with Hezbollah officials in Beirut, Lebanon. This on Tuesday evening local time.
Netanyahu vowed on October 7, 2023 to kill every senior leader in Hamas. This after Hamas' elite Nukba force killed 850 Israeli civilians, mostly women and children, and 342 Israeli soldiers, policemen and border guards in a raid lasting several days in Southern Israel.
Saleh al-Arouri was a senior leader of Hamas, says Wikipedia, dubbed the architect of the October 7 massacre, and a founding commander of its military wing, the Izz ad-Din al-Qassam Brigades.
He was also said to be the deputy chairman of Hamas's political bureau, and Hamas's military commander of the West Bank, although he lived in Lebanon at the time of his death. He had been in the US list of terrorists since 2015.
Video of the attack may be seen at: https://x.com/SMObserved/status/1742245262465343859?s=20. A square in Southern Beirut can be seen with fires in several places.