Israeli warplanes broke the sound barrier over Beirut and several areas on Saturday night, state media reported, as residents heard loud booms reverberate across the city and in the mountains.

Lebanese Health Minister Rakan Nassereddine said Saturday that 46 rescuers and five medical staff had been killed by Israel since the start of the war with Hezbollah on March 2.

President Joseph Aoun condemned the Israeli strike that killed a journalist for Hezbollah's Al-Manar TV and another for the pro-Hezbollah Al-Mayadeen channel in southern Lebanon on Saturday.

"Once again, the Israeli aggression violates the most basic rules of international law, international humanitarian law and the laws of war, by targeting journalists, who are ultimately civilians performing a professional duty," Aoun said in a statement released by the presidency.

Three Lebanese journalists were killed on Saturday by an Israeli strike that targeted their vehicle in southern Lebanon, a military source told AFP.

At the G7 Foreign Ministers’ meeting in France, the UK Foreign Secretary Yvette Cooper announced an additional £2 million in UK humanitarian funding to Lebanon bringing the British total contribution to £9.5 million since the beginning of the conflict.

A strike hit Beirut's southern suburbs on Friday afternoon without warning from the Israeli military, Lebanese state media said, as TV footage showed smoke rising from the area.

Speaker Nabih Berri has emphasized that the Foreign Ministry's decision to expel the Iranian ambassador "cannot pass."

Free Patriotic Movement chief Jebran Bassil visited Friday President Joseph Aoun, Prime Minister Nawaf Salam, Speaker Nabih Berri and Maronite Patriarch Beshara al-Rahi, in a series of meetings aimed at averting civil strife.

Bassil urged all Lebanese to maintain a patriotic stance and spare their children the bitterness of internal conflict. "One hundred days of foreign war are better than a single day of civil war — though we want neither," he said, as he accused certain domestic actors of seeking an internal conflict as a means to end the Israeli aggression, a clear reference to the FPM’s long-standing rivals, the Lebanese Forces.

Unprecedented security measures have started to be taken in the capital Beirut, reinforced by the deployment of additional army and Internal Security Forces units, and the deployment of military and plainclothes intelligence patrols, media reports said.

Nearly a month into the Middle East war, Lebanon is facing a deepening humanitarian crisis that now risks teetering over into a catastrophe, the U.N. refugee agency warned Friday.

Since March 2, more than a million people -- one in five residents -- have been forced to flee their homes, said the UNHCR.