Caretaker Prime Minister Najib Mikati has said that U.S. special envoy Amos Hochstein will visit Lebanon soon, amid fears of an all-out war between Lebanon and Israel as tensions escalated between the two archfoes in recent weeks.

Hochstein was last in Beirut in January in a diplomatic effort to prevent a bigger conflict between Israel and Hezbollah.

A UNIFIL vehicle lost its way and ended up in the Beirut southern suburb of Hay al-Sellom on Thursday evening, which sparked an altercation with locals and a brief detention of the peacekeepers, media reports said.

Caretaker Prime Minister Najib Mikati met Friday with the ambassadors of the five-nation group at the Grand Serail.

Egyptian Ambassador Alaa Moussa, U.S. ambassador Lisa Johnson, French Ambassador Herve Magro, Saudi Ambassador Walid al-Bukhari, and Qatari Ambassador Sheikh Saud bin Abdul Rahman Al-Thani discussed the Lebanese presidential impasse with Mikati.

In the green hills of the Israeli-occupied Golan Heights near Lebanon, Arye and Ditza Alon are hiking through a tranquil nature reserve, wondering whether the wider region could become a war zone.

While mediators hope for a truce soon in Gaza to the south, fears are growing that months of cross-border clashes in the north could escalate into a bigger conflict.

Israel killed a Hezbollah fighter in a strike on Syria, close to the Lebanese border, also hitting near Damascus Thursday, a war monitor said, hours after similar attacks.

Hezbollah holds sway over Lebanon's eastern border with Syria, as well as some regions on the other side of the border including Qusayr, the target of Thursday's strike.

The Foreign Affairs Committee of the Lebanese Parliament chaired by MP Fadi Alameh has visited the Ain el-Helweh Palestinian refugee camp, accompanied by the Director of UNRWA Affairs in Lebanon, Dorothee Klaus. The Director of the Office of the Lebanese Palestinian Dialogue Committee, Abdel Nasser al-Ayyi, was also in attendance.

"This visit by MPs underscores Lebanon's support for the sustained work of UNRWA and its crucial humanitarian role in delivering essential services to Palestine refugees in Lebanon, and as such contributes to its stability. This comes amidst an unprecedented financial crisis looming over UNRWA due to the freeze of funding of 16 donors nations. Without funding to UNRWA resuming, UNRWA operations across the Middle East, including in Lebanon, will face comprised operations after March," UNRWA said in a statement.

U.S. administration and intelligence officials are concerned that Israel is planning a ground incursion into Lebanon that could be launched in the late spring or early summer if diplomatic efforts fail to push Hezbollah back from the northern border with Israel, CNN has quoted senior administrations officials and officials familiar with the intelligence as saying.

Austria's foreign minister on Thursday urged Israel and Lebanon's militant Hezbollah group against escalating the conflict along the volatile Israel-Lebanon border and expressed hope for a pause in the fighting in Gaza in time for the start of the Muslim holy month of Ramadan in March.

The Middle East has witnessed enough devastation and cruelty, said Alexander Schallenberg, speaking after meeting his Lebanese counterpart in Beirut.

Hezbollah fired Thursday volleys of Katyusha rockets at Eilon in northern Israel in response to the killing of two civilians in Israeli strikes, as warplanes raided Wednesday the towns of Siddiqin and Kafra, also injuring 14 people.

Hezbollah also attacked soldiers in Jal al-Alam with artillery shells, a gathering of Israeli troops on the Cobra Hill and an Israeli post in the occupied Shebaa Farms.

Israeli strikes killed two elderly people in Lebanon's south on Wednesday evening, while Hamas earlier fired a volley of rockets towards northern Israel from Lebanon amid escalating cross-border clashes in recent days.

Hezbollah, a Hamas ally, has exchanged near-daily fire with the Israeli army since war erupted between Israel and the Gaza-based Palestinian militant group in October, while Palestinian groups in Lebanon have also occasionally claimed attacks.