The Iran-backed group has been severely weakened by a year-long conflict with Israel, including two months of open war, that destroyed part of its arsenal and decimated its leadership.

Under pressure from the United States, the Lebanese government in August ordered the military to prepare a plan to disarm the group by the year's end.

Samir Geagea, head of the Lebanese Forces and parliament's main Christian bloc, said Hezbollah's weapons had "no impact" against Israel and only brought "destruction, ruin, displacement and invited new occupation".

"The shortest path to ending Israeli occupation and aggression, my brothers, is building a real state... and there can be no true state as long as illegal weapons remain," he added, calling for "all weapons to return to the Lebanese state".

"Your war with Israel was lost and destructive... a civil war would be even more disastrous and could cause you to lose everything."

Hezbollah, the only faction to keep its weapons after Lebanon's 1975-1990 civil war, has rejected disarmament, accusing authorities of serving Israel and the United States.

"It's still possible to break this cycle and avoid further losses by making the courageous choice to move from illegality to legitimacy," Geagea said, accusing Hezbollah of serving "an Iranian expansionist project".