At least three Lebanese soldiers and one senior Israeli army officer have been killed after the two sides exchanged fire along their border.
Several other Lebanese and Israeli soldiers were also injured in the fighting on Tuesday, according to Lebanese media.
The violence broke out after Israeli troops uprooted a tree on the Lebanese side, officials from Beirut said.
Israeli soldiers launched several rockets near the southern Lebanese village of Adissyeh.
An unnamed source said that Israeli warplanes fired two rockets on the hills of Adissyeh.
A Lebanese journalist from al-Akhbar newspaper was also killed in the fighting, a Press TV correspondent reported.
Israel’s Foreign Ministry said in a statement it held the Lebanese government responsible for the “serious incident,” warning of possible consequences if violence were to continue.
Meanwhile, Lebanon’s President Michel Sleiman said any violation into Lebanese territory by Israel is a breach of the UN Resolution 1701, which ended Israel’s war against Lebanon in 2006.
Prime Minister Saad Hariri also condemned the violation of Lebanese sovereignty and demands.
“The United Nations and the international community bear their responsibilities and pressure Israel to stop its aggression,” a statement from Hariri’s office said.
Parliamentary Speaker Nabih Berri also issued a statement, calling on the government to urgently file a complaint to the UN Security Council over the violation.