Israeli warplanes attacked targets on the border between Lebanon and Syria on Monday night, according to initial reports from Lebanon.
The planes launched four air raids on the Janta area in the mountains separating the Lebanese village of Nabi Sheet from the Syrian border, according to the Daily Star newspaper.
The Janta area is known to house a Hezbollah post, where recruitment and training are carried out. Janta is also a well-known route for arms smuggling between Lebanon and Syria, the source added.
Eyewitnesses said plumes of smoke were seen rising from the area were the Israeli planes carried out the strikes.
Earlier, al-Nashra news site reported that Israeli planes had launched two raids in the Bekaa Valley.
This is a developing story.