Israeli air strikes targeted a Palestinian faction loyal to the Syrian regime in eastern Lebanon before dawn on Monday, Lebanese state media and the group said.
The strikes came just hours after the head of Lebanese Shiite movement Hezbollah threatened Israel after two drones fell on its Beirut stronghold in what he described as a targeted “drone attack”.
The National News Agency said “three hostile strikes” after midnight hit Lebanon’s eastern mountains near Qusaya town “where the Popular Front for the Liberation of Palestine [PFLP] – General Command has military posts”.
“They responded will a barrage of anti-aircraft fire,” it said.
PFLP-GC spokesman Anwar Raja told the Al-Mayadeen television channel that it was an Israeli strike.
The PFLP-GC has close ties to Hezbollah and the Syrian regime.
It has positions in the eastern region of Bekaa, as well as in Al-Naaemeh just south of Beirut.
Qusaya is only about five kilometres (three miles) from the Syrian border.
In July 2015, a security official said a blast at a PFLP-GC base there wounded seven people, while the Palestinian group blamed it on an Israeli strike.
On Sunday, Hezbollah chief Hassan Nasrallah threatened Israel after what he described as a targeted “drone attack” in a stronghold of his group in the south of Beirut.