The strikes on a bridge near the northern border with Syria also wounded 18 people, hospital officials said.
Beirut also awoke to a dozen thunderous raids on Shi'ite Muslim suburbs before dawn. There was no immediate word on casualties in those raids.
Beirut’s southern suburbs are now in ruins after repeated air strikes since the conflict began on July 12.
United Nations
Meanwhile Russia says major powers have again failed to agree on a Security Council resolution aimed at ending the hostilities in Lebanon.
In the UN France and the United States have been wrangling for several days over the wording of a text on the conflict.
Overnight UN diplomats were redrafting a resolution to end hostilities in Lebanon with Secretary General KofI Annan calling on the UN Security Council members to pass a resolution by the end of the week.
Mr Annan also reiterated a "call that the fighting must stop to save civilians on both sides from the nightmare they have endured in the past four weeks," said the UN spokesman Stephane Dujarric.
British Prime Minister Tony Blair said he believed an agreement on a United Nations resolution for the conflict in Lebanon could be reached within the next 24 hours, a Downing Street source said.
Mr Blair has spoken to several world leaders, including UN Secretary General Kofi Annan, French President Jacques Chirac and Italian Prime Minister Romano Prodi.
French Foreign Minister Philippe Douste-Blazy also seemed hopeful that a resolution would soon be reached, saying a deal on a draft UN resolution was imminent.
"We are expecting an agreement in New York from one moment to the next," he told a press conference. "Every hour counts."
Mr Douste-Blazy said that the primary concern for Paris remained the cessation of violence, which would allow the "progressive withdrawal of the Israeli army" back to the Lebanese border.
The American ambassador to the UN, John Bolton, was quoted as saying progress is being made.
The United States and Israel want Israeli troops to remain in southern Lebanon until an international force arrives, fearing that Hezbollah could retake control of the border zone.
France had wanted a resolution to incorporate Lebanese demands that Israeli troops leave as soon as fighting stops, but on Wednesday it proposed that Israel be allowed to carry out a phased withdrawal.
Israel had delayed its planned expansion of its ground offensive into southern Lebanon saying it would give diplomats at the United Nations a chance to negotiate an end to the violence.
But Israel's defence minister warned that if diplomatic efforts failed to broker a ceasefire with Hezbollah, the military would launch a decisive ground invasion of Lebanon.
The army is preparing with a build up of troops and military hardware on the border but the Israeli government has put on hold plans for a major ground offensive of Lebanon.
UN aid chief slams both sides
The United Nations humanitarian chief, Jan Egeland, has harshly criticised both Israel and Hezbollah for the suffering their continued fighting is causing for civilians.
Mr Egeland says the fighting has made Lebanon one of the worst places in the world for humanitarian workers to gain access to those who most need their help.
Mr Egeland says repeated requests by UN agencies to deliver aid have gone unheard but he stresses the situation is urgent.
Aid boost
A ship carrying Red Cross relief supplies is sailing from Cyprus to the embattled southern Lebanese port city of Tyre after receiving a security clearance from Israeli forces.
Staff from the International Committee of the Red Cross are also helping civilians to evacuate from villages in southern Lebanon near Tyre following similar guarantees.
But Medical relief agency Medecins Sans Frontiers (Doctors Without Borders) vows to defy Israeli ban on vehicle movements south of Lebanon's Litani river.
The Brazilian Foreign Minister Celso Amorim plans to visit Lebanon to deliver 2.5 tonnes of medicine for civilians caught up in the conflict, the government said.