The front page of the Al-Akhbar daily, which is close to Hezbollah, carried a portrait of LF leader Samir Geagea donning Adolf Hitler’s uniform and toothbrush moustache with a headline that read “No doubt”.

“Samir Geagea, you were the first to know what happened yesterday... because you planned, prepared and executed... a major crime,” the newspaper wrote.

The LF strenuously denied any involvement in Thursday’s flare-up and said Hezbollah was “invading” off-limits neighbourhoods when the violence broke out.

A heavy army presence was visible on the streets on Friday amid fears of an escalation.

On Thursday, Amal and Hezbollah militiamen filled the streets in their hundreds around Tayouneh, a notorious civil war flashpoint near the spot where the April 1975 bus attack often presented as the trigger of the conflict occurred.

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Six killed in Beirut street violence sparked by protest against investigation of 2020 blasts

Six killed in Beirut street violence sparked by protest against investigation of 2020 blasts

As a deluge of bullets riddled residential facades, and gaggles of fighters wearing ammunition vests took over the streets and emptied their magazines haphazardly, civilians crouched in homes, terrified.

When bursts of gunfire rang out near her Adlieh home, Jumanah Zabaneh, 45, rushed out to the street, braving stray bullets, to pick up her two daughters.

She did not stop running until she arrived at the school, where she said scenes of “hysteria” played out.

The way back home was packed with danger.

“The gunfire was so close, we had to duck every two metres,” she said. “We hid behind cars, at the entrances to buildings, behind utility poles.”

Once at home, her eight-year-old daughter Tamara, who had spent a year in therapy over trauma from last year’s blast, told her: “Mom, you said it would never happen again.”

As preparations in southern Lebanon and in Beirut were under way for the funerals, the country marked a day of mourning declared by the presidency.

France, the US and UN appealed for de-escalation but also insisted on allowing the probe into the port explosion to continue unhindered.

Russia said on Friday it was “extremely concerned” about the tensions and called for “restraint” from all sides.

In addition to long-standing animosity between the LF and the Shiite groups, their feud was renewed by the work of Tarek Bitar, the judge who has led the investigation into the August 4, 2020 port explosion.

Eyes on Judge Bitar

What was one of the world’s biggest ever non-nuclear explosions and Lebanon’s worst peacetime disaster killed 215 people, wounded thousands and flattened swathes of the capital.

The investigation has not yet established who was responsible for the tonnes of ammonium nitrate which had been poorly stored at the port for years nor what exactly started the fire that detonated the fertiliser.

Hezbollah and Amal accuse Bitar of political bias in an investigation which Lebanon’s ruling elite as a whole has hampered at every turn for more than a year.

The discreet 47-year-old judge is seen by the blast victims’ families and many others who want the wholesale removal of the political elite as the country’s best chance to achieve justice and political change.

“Judges must be free from violence. They must be free of threats. They must be free of intimidation, including that of Hezbollah,” US State Department spokesman Ned Price said.

Bitar’s entourage says the judge is aware of the risks in a country’s whose history is littered with unpunished assassinations but remains determined to keep investigating.

The latest appeals rulings on the various legal challenges launched by subpoenaed ministers allow Bitar to resume an investigation which was suspended multiple times.

Next week is the earliest the probe could resume, after a day of mourning on Friday and a religious holiday until Monday.

The violence is the worst since 2008, when followers of the Sunni-led government fought battles in Beirut with gunmen loyal to Hezbollah.

The government headed by Prime Minister Najib Mikati and whose members are all sponsored by Lebanon’s hereditary political barons is expected to seek a solution that would allow the investigation to continue but appease Hezbollah.

The Iranian-backed group’s leader Hassan Nasrallah, whose influence on the street and in the political arena is unmatched, unleashed a strident attack against Bitar in a televised speech on Monday.