The Israeli Air Force struck a "terrorist" target 7 kilometers south of Beirut early on Friday morning, the IDF said in a statement.
The airstrike was carried out in response to four rockets being fired from Lebanon into northern Israel on Thursday.
"Yesterday’s attack is a blatant breach on Israeli sovereignty that jeopardized Israeli civilian life. Israel will not tolerate terrorist aggression originating from Lebanese territory," the IDF said in a statement.
The IDF Spokesman Brig-Gen. Yoav Mordechai said that the Israel Air Force struck targets a few kilometers from Beirut, and that "echoes of the blasts could be heard in Beirut."
Israel said it holds the Lebanese government responsible for the rocket fire that occurred on Thursday, even though a Sunni group called the Abdallah al-Azzam Brigades claimed responsibility for the rockets earlier on Thursday.
Defense Minister Moshe Ya'alon held a consultation with IDF Chief of Staff Benny Gantz on Friday following the rockets fire and the IAF strike in response to it.
"The state of Israel sees the Lebanese government as responsible to what happens in its territory and will not allow any firing or provocation at it," he said. "We will not allow anyone to disrupt the lives of our civilians."
Guerrilla fighters trained by the West began moving towards Damascus in mid-August, French newspaper Le Figaroreported on Thursday.
Le Figaro reported that this is the reason behind the Assad regime's alleged chemical weapons attack in Damascus on Wednesday morning, as UN inspectors were allowed into the country to investigate allegations of WMD use.
The rebels were trained for several months in a training camp on the Jordanian-Syrian border by CIA operatives, as well as Jordanian and Israeli commandos, the paper said.
The paper quoted a researcher at the French Institute for Strategic Analysis as saying the trained rebels group was passing through Ghouta, on their way to Damascus.
The US is now facing a "more abbreviate time frame" to reach a decision on an American response to the escalating situations in Syria and Egypt, US President Barack Obama said on CNN's New Day in an interview that aired on Friday.
While UN officials were in Damascus to investigate allegations of chemical weapons use, Obama said he was not optimistic the government of Syrian President Bashar Assad would be cooperative.
He warned, however, that the United States' "core national interests" are involved in the Syrian conflict, "both in terms of us making sure that weapons of mass destruction are not proliferating, as well as needing to protect our allies, our bases in the region."
He also asserted that the US cannot intervene militarily in Syria without support from the UN, and that the US needs to "try to work within an international framework to do everything we can to see Assad ousted."
"If the US goes in and attacks another country without a UN mandate and without clear evidence that can be presented, then there are questions in terms of whether international law supports it," he told CNN's Chris Cuomo.
The Middle East did not take a break for the summer; it didn’t even slow down to catch its breath. The summer heat seemed to have peaked violence and bloodshed, with each week bringing more viciousness than the incomprehensible levels of violence of the week before.