Israel claimed late Tuesday that they had killed Shukur, who they said was behind a rocket attack on Majdal Shams in the Israeli-occupied Golan Heights that killed 12 youths.

Hezbollah said in a statement that "the great jihadist commander brother Fuad Shukr (Hajj Mohsen) was present" in the building targeted by "the Zionist enemy".

Rescue teams "have been working since the incident happened... to remove the rubble... and we are still waiting for the results of this operation regarding the fate of the great commander and other citizens" who were also in the building, the statement said.

In a provisional toll, Lebanon's health ministry said three civilians -- a woman and two children -- were killed in the strike.

The Israeli army has described Shukur as Hezbollah's "most senior military commander" and "right-hand man" to the group's chief Hassan Nasrallah.

In 2017, the US Treasury offered $5 million for information on Shukur, in his early sixties, describing him as "a senior adviser" to Nasrallah.

Hezbollah has denied responsibility for Saturday's rocket strike on the Druze Arab town of Majdal Shams in the occupied Syrian Golan Heights, though the group claimed multiple strikes on Israeli military positions that day.

Israel and Hezbollah have traded deadly cross-border strikes since the start of the Israeli war on Gaza on 7 October of last year.