Two senior Hezbollah officials were killed in an attack on the village of Markaba in southern Lebanon on Friday morning, as reported by Saudi-owned Al-Arabiya.
The Qatari channel Alaraby claimed that the strikes targeted Hezbollah's regional headquarters.
Earlier, the Hezbollah-affiliated Lebanese site Al Manar reported that Israeli airstrikes had targeted Markaba.
The IDF confirmed on Friday afternoon that it had identified a number of terrorists entering a Hezbollah military structure in Markaba, and had struck the building soon after.
They also confirmed strikes were carried out against Hezbollah military structure in Ayta ash Shab.
Escalating tensions
In the past week, several Hezbollah commanders have been killed by IAF strikes. Senior Hezbollah Radwan force commander Ali Jaafar Maatuk was killed in a strike in southern Lebanon last Thursday, the IDF announced. Several lower-ranking operatives were also killed.
Tensions escalate as Hezbollah and the Israeli military exchange a barrage of attacks, with rockets reaching deeper into Israel.
Ariel Roth contributed to this report.