Israel's air force says it has bombed a militant target in Lebanon in response to four rockets fired at Israeli targets on Thursday.
Israeli officials said Friday that the air strike targeted a site between Beirut and Sidon, near the municipality of Naameh.
A Palestinian militant group, the Popular Front for the Liberation of Palestine, has confirmed that an Israeli-fired rocket has struck one of its bases south of Beirut, but says it has caused no injuries or significant damage.
On Thursday Israel said two rockets fired from southern Lebanon landed in populated areas in northern Israel and that one was intercepted by Israel's Iron Dome missile defense system. A military spokesman said the attack was an isolated incident. There were no reports of injuries.
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.
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.