Israel's military says four rockets were fired at Israel Thursday from southern Lebanon, but there were no reports of injuries.
A military spokesman said two of the rockets landed in populated areas in northern Israel and one was intercepted by Israel's Iron Dome missile defense system. He called the attack an isolated incident.
Southern Lebanon is a stronghold of the Hezbollah Islamist militant group that fought a war with Israel in 2006. But Israel blamed the attack on a global jihad terror organization, an apparent reference to al-Qaida.
Israeli officials said those who carried out the attack were operating near the Lebanese city of Tyre.
In response to the attack, Israeli Prime Minister Benjamin Netanyahu said his country's policy is to protect its civilians and prevent incidents such as the one on Thursday. He said whoever tries to harm Israel should know that Israel will harm them.
There was no immediate claim of responsibility for the attack.