Senior Hezbollah official Sheikh Nabil Qaouq said Thursday at an event in south Lebanon that his group is “prepared for the possibility of expanding the war” with Israel, a day after the fiercest escalation since the beginning of clashes.

Hussein Berjawi had invited his daughter, her husband and their two young sons to dinner in south Lebanon, but an Israeli strike nearly wiped them all out.

At least five family members -- Hussein Barjawi, his daughters Amani and Zeinab, his sister Fatima and Zeinab's son Mahmoud Amer -- were killed in the strike on the city of Nabatiyeh.

Kataeb Party leader MP Sami Gemayel on Thursday stressed that “all the Israeli excuses for targeting civilians are rejected and condemned,” hours after ten Lebanese civilians were killed in Israeli airstrikes across south Lebanon.

Former Progressive Socialist Party leader ex-MP Walid Jumblat on Thursday said that the proper implementation of U.N. Security Council Resolution 1701 (2006) would prevent “further escalation” between Israel and Hezbollah.

Caretaker Prime Minister Najib Mikati condemned Thursday the escalation as more Israeli strikes were reported in south Lebanon.

"At a time where we are insisting on calm and call all sides to not escalate, we find the Israeli enemy extending its aggression," read a statement from Mikati's office.

Israeli warplanes carried out Thursday several airstrikes on Wadi Slouqi in south Lebanon as the civilian death toll from Wednesday's airstrikes rose to 10.

Israel's air force also struck the border towns of Labbouneh, Majdal Selm, Maroun al-Rass, Blida and Houla. The Israeli military said Thursday's strikes targeted Hezbollah infrastructure and launch posts.

At least 10 people, mostly civilians, were killed on Wednesday in Israeli strikes on south Lebanon, while the Israeli army said it lost a soldier in cross-border rocket fire.

While the rocket attack was not immediately claimed, the exchanges of fire -- and the worst single-day civilian death toll in Lebanon since cross-border hostilities began in October -- raised fears of a broader conflict between Israel and Hezbollah.

The slow-simmering cross-border conflict between Lebanon's Hezbollah and Israeli forces escalated Wednesday, reviving fears that the daily clashes could expand into an all-out war.

A rocket fired from Lebanon struck the northern Israeli town of Safed, killing a 20-year-old female soldier and wounding at least eight people.

The civilian death toll from two Israeli airstrikes in Lebanon has risen to 10, Lebanese state media reported Thursday, making the previous day the deadliest one in more than four months of cross-border exchanges.

Hezbollah has vowed to retaliate for the strikes, which hit in the city of Nabatiyeh and a village in southern Lebanon, just hours after projectiles from Lebanon killed an Israeli soldier.

Thousands of people gathered in the Lebanese capital Wednesday to commemorate the 2005 assassination of former prime minister Rafik Hariri and urge his son Saad to make a political comeback.

Waving the pale-blue flags of Saad Hariri's political party the al-Mustaqbal Movement, the crowd clapped and cheered as he paid his respects at his father's tomb in central Beirut.