Only pedestrians have ventured into the streets of the port city of Tyre and country roads and highways are deserted throughout the region after people in the area were warned not to travel by car.
"Every vehicle, whatever its nature, which travels south of the Litani will be bombed on suspicion of transporting rockets and arms for the terrorists," said leaflets, addressed to the Lebanese people and signed by the "State of Israel".
Although there has been a relative lull in bombardments around the region of Tyre there is growing alarm about the humanitarian situation.
29th day of fighting
Israeli forces pushed deeper into some parts of south Lebanon today despite fierce resistance from Hezbollah guerrillas, Lebanese security sources told Reuters.
Hezbollah said its guerrillas had inflicted many casualties on Israeli soldiers and hit four tanks in several pitched battles on the 29th day of war between the two sides.
The group did not say if any of its own fighters had been killed or wounded.
The security sources said Israeli forces based in Taibeh, some 5km from Israel, pushed west to the outskirts of the village of Qantara and north towards Burj al-Molouk and Qlaiah villages.
Hezbollah said its fighters confronted Israeli forces as they tried to advance on the outskirts of Qantara, 8km from the border, and destroyed two tanks there, killing or wounding 10 soldiers.
The Israeli army said there had been clashes around Qantara but gave no details of casualties.
Hezbollah said it had also destroyed two tanks near Burj al-Molouk and inflicted casualties on Israeli forces at the village of Debel, 5km from the border.
Fighting also was reported near the town of Bint Jbeil and the village of Aita al-Shaab, the sources said.
Tyre isolated
Tyre is cut off from the outside world after the Israeli army destroyed a bridge connecting the city to the north - the last major crossing point used by aid agencies to take medicine and other supplies to people trapped in the south.
The United Nations World Food Program says the blown bridge and a lack of security assurances from Israel means it is unable to send aid south for the second straight day.
“Tyre is currently cut off. (UN peacekeeping force) UNIFIL is looking into repairing the bridge but is trying to get assurances from the Israeli Defence Forces they will be safe," said WFP spokesman Robin Lodge. “So far such assurances are not forthcoming."
The United Nations estimates up to 900,000 people have been displaced by the 28-day conflict.
Meanwhile, ground fighting has intensified across the south Lebanon front, and AP reported that at least 19 Lebanese civilians died in airstrikes on the 28th day of fighting.
The Israeli air force carried out dozens of raids in 20 different locations across the Lebanese border area, while AP quoted the Israeli army as saying at least 160 rockets had hit northern Israel, most of them in and around the towns of Nahariya, Kiryat Shemona, Maalot, Safed. No Israeli civilians died yesterday.
In other developments:
At least five rockets ploughed into the outskirts of Palestinian villages straddling the West bank border, causing no injuries, the sources added.
Mr Kellenberger will meet Israeli Prime Minister Ehud Olmert, Foreign Minister Tzipi Livni and Defence Minister Amir Peretz to discuss the humanitarian situation in northern Israel and in Lebanon, "access to those in need and the fate of captured soldiers and other people detained in connection with the conflict", the ICRC statement added.
Mr Kellenberger will also raise the ICRC's concerns regarding the humanitarian situation in the occupied Palestinian territories.
The sources said that 24-year-old Amjad al-Attili and Mohammed Atiq, 26, were members of the radical Islamic Jihad militant group.
There was no immediate comment from the Israeli army.
It was the first time Israel has bombarded the Ein el-Hilweh camp, which is home to about 50,000 Palestinian refugees, since the start of the four-week-old conflict.
Two shells from an Israeli gunboat fell on the area around the home of Colonel Munir Maqdah, a radical military chief of the Fatah movement in Lebanon.
Fighter-bombers made three raids in the Akkar highlands bordering Syria in north Lebanon, pounding roads and the Arqa bridge which had already been destroyed in air raids last week, the police said.
Planes fired on two tankers carrying fuel near the Syrian border on a minor road in east Lebanon.
At least six people were killed and 28 wounded in two raids on the village of Ghaziyeh, close to the city of Sidon, 500 metres away from the funeral procession of 14 people.
Late Tuesday five civilians were killed and four wounded in the same sector in the bombing of 11 tankers and three trucks carrying a harvest of apricots.
"The two were members of a paratroop unit which came under fire from a local Hezbollah command post," an army spokeswoman told AFP, adding Israeli fighter-bombers destroyed the command post, killing 20 Hezbollah fighters.
The army had previously announced the death of another two soldiers in fighting around the village of Debel near Bint Jbeil on Tuesday.
The latest deaths bring to 65 the number of Israeli military personnel killed since the start of hostilities on July 12. Thirty-six Israeli civilians have also been killed.
People missing
Meanwhile, rescue workers were still frantically searching for people missing after Israeli air strikes on residential buildings in south Beirut that killed 31 people and wounded 75.
The double strike on the Shiyah district - which until now had been spared attacks and was still inhabited by some residents - caused a three-storey building to collapse.
As efforts intensified to agree a UN Security Council resolution calling for an end to hostilities, Israeli Defence Minister Amir Peretz warned that if diplomatic efforts failed to stop Hezbollah rocket attacks the army would expand its operations.
"I have instructed all the Israel Defence Forces commanders to prepare for an operation aimed at taking over launching areas and reduce as much as possible Hezbollah's rocket launching capability," he said.
Israel has put a new commander in charge of coordinating the military offensive against Hezbollah in a move widely seen as effectively demoting the head of the northern command.
There has been criticism of the Israeli military's handling of the offensive, which has so far failed to silence Hezbollah's rockets.
A day after his Cabinet conditionally approved dispatching the troops to the south, Lebanese Prime Minister Fouad Siniora praised Hezbollah's resistance, but said it was time for Lebanon to "impose its full control, authority and presence" nationwide - as directed in previous UN resolutions that also called for the government to disarm Hezbollah.
"There will be no authority, no one in command, no weapons other than those of the Lebanese state," he said on Al-Arabiya television.