Students were forced to take shelter in the hallways of a Lebanese school as violence broke out in Beirut on Thursday, killing at least six people and wounding dozens during the long bout of street fighting, the Associated Press reported.
The armed clashes began during a demonstration arranged by the Lebanese militant group Hezbollah and allies who were protesting the lead judge investigating last year's explosion in a Beirut port. It was not immediately clear what prompted the fighting to break out, the AP said.
Four projectiles fell near the private French school, Freres of Furn el Chebbak, on Thursday, according to a security official who spoke on condition of anonymity. Students gathered inside the school's central corridors with the windows open in hopes of avoiding the effects of the fighting.
An entire neighborhood was covered in smoke as the gunfire continued for hours. Several fires broke out, including in a car and a lower floor of a building where residents were trapped by the blaze and forced to call for aid, the AP reported.
For more reporting from the Associated Press, see below.

The exchanges of fire along a former front line from the 1975-90 civil war involved pistols, automatic rifles and rocket-propelled grenades, and were reminiscent of that conflict. Gunfire echoed in the capital for several hours and ambulances, sirens wailing, rushed to pick up casualties. Snipers shot from buildings. Bullets penetrated apartment windows in the area.
Tensions had been running high after the Iran-backed Hezbollah and its Shiite allies from the Amal Movement demanded the removal of Tarek Bitar, the judge leading the investigation into last year's massive port explosion. The two parties called for a protest near the Justice Palace, located along the former front line between Muslim Shiite and Christian areas.
In a statement Thursday, the two groups said their protesters came under fire from snipers on rooftops.
The violence unfolded while U.S. Undersecretary of State for Political Affairs Victoria Nuland was in town, meeting with Lebanese officials. Her schedule was slightly thrown off by the action on the streets.
Nuland later told an airport news conference that an impartial judiciary is the guarantor of all rights, in apparent criticism of Hezbollah. "The Lebanese people deserve no less and the victims and the families of those lost in the port blast deserve no less," she said. "Today's unacceptable violence makes clear what the stakes are."
The demands for Bitar's removal and calls for protests upset many who considered it a blatant intervention in the work of the judiciary.
The right-wing Christian Lebanese Forces mobilized supporters Wednesday evening after Hezbollah and Amal called for the protest at the Justice Palace, located in a Christian area. Videos circulating on social media showed supporters of the Christian Lebanese Forces marching in the streets, carrying large crosses.
As the clashes erupted, a journalist with the AP saw a man open fire with a pistol and gunmen shooting in the direction of protesters from the balcony of a building. Several men fell immediately from the gunfire and bled on the street. The army deployed heavily and sent patrols to the area to search for the gunmen, following the exchanges of gunfire between the Muslim and Christian sides of the capital.
Lebanese authorities said at least six people were killed and 30 wounded. A staffer at the emergency room at Al-Sahel hospital said they received three bodies and 15 people who were wounded. One of the dead, a woman, had received a bullet to her head. Two of the injured were in critical condition.
Sporadic shooting continued even after army troops deployed to the area Thursday. Residents and civilians in the area were ducking to avoid the shooting. Someone screamed, "Some martyrs on the ground!" People pulled one man who was apparently shot and down, away from the line of fire. Others pulled another body away.
In some videos circulating online, some men were chatting "Shiite Shiite" on the streets, as residents were running from the gunfire.
In a statement, Prime Minister Najib Mikati appealed for calm and urged people "not to be dragged into civil strife."
The court probe centers on hundreds of tons of ammonium nitrates that had been improperly stored at a port warehouse that detonated on August 4, 2020, killing at least 215 people, injuring thousands and destroying parts of nearby neighborhoods. It was one of the largest non-nuclear explosions in history and has further devastated the country already roiled by political divisions and unprecedented economic and financial meltdown.
Bitar is the second judge to lead the complicated investigation—his predecessor was removed following legal challenges. Now Bitar has come up against formidable opposition from the powerful Hezbollah group and its allies who accuse him of singling out politicians for questioning, most of them allied with Hezbollah.
None of Hezbollah's officials have so far been charged in the 14-month-old investigation.
The tensions over the port blast add to Lebanon's enormous multiple troubles, including an unprecedented economic and financial meltdown, an energy crisis leading to extended electricity blackouts, hyperinflation and soaring poverty.
Beirut resident Haneen Chemaly, who heads a local NGO that provides social services, accused Lebanon's leaders of steering the country into civil war, saying it's "the last card they have to use."
"They have [driven] us into bankruptcy, devastation, and now they are scaring us with the specter of civil war," she said.
The armed clash could derail Mikati's month-old government even before it begins tackling Lebanon's economic meltdown.
A Cabinet meeting was canceled Wednesday after Hezbollah demanded urgent government action against the judge. One Hezbollah-allied minister said he and other Cabinet members would stage a walkout if Bitar isn't removed.
