Residents of the Upper Galilee region were told to be vigilant and avoid crowds on Monday in a message from the local council after consultations with the IDF Home Front Command.
The warning came hours after at least two people were killed in a drone strike in South Lebanon.
The Hezbollah-affiliated Al Akhbar newspaper said three more people were wounded in the attack. A source told the paper that a car for first attacked by a drone wounding its passengers and that a motorcycle that approached the scene was then struck killing both its riders. According to the report, a child who was on a balcony in a nearby building was also hurt.
The Syrian opposition site Voice of the Capital said on Monday that the Syrian air defenses also raised their alert in south and central Syria after Israeli threats to attack Hezbollah and Iranian Revolutionary Guard Corps members there in retaliation for the Massacre of 12 children on the Golan Heights in a Hezbollah on Sunday
In Beirut, Some flights have been suspended after concerns that an Israeli attack on the capital may be imminent. Lufthansa on Monday said it had suspended five routes to and from Beirut by the group's carriers Swiss International Air Lines, Eurowings and Lufthansa up to and including July 30 "in an abundance of caution".