Missiles land in the town of Ayta Shaab after rockets launched from south Lebanon strike northern Israel.
Lebanon’s foreign minister is set to to file a complaint with the UN over Israeli violations of his country’s airspace.
The Israeli air force has intensified low-flying sorties over Lebanese airspace including Beirut, Lebanese security officials said on Sunday.
Lebanon’s National News Agency reported that warplanes flew over southern Lebanon, Beirut, the eastern Bekaa Valley and the city of Baalbek.
Last month the UN called on Israel to stop increased military air patrols over Lebanon after two Israeli air attacks on Syria.
Israeli warplanes regularly enter Lebanese airspace, but a Lebanese security official told the AP news agency that the Sunday overflights were among the most intense recently.
There was no immediate comment from Israel.
The flights come amid heightened regional tensions because of the civil war in Syria. Israel is believed to have carried out three airstrikes inside Syria this year reportedly aimed at weapons meant for the Lebanese Hezbollah.