Protestors claimed their goal was to secure the return of citizens stranded in Iran and block external influences on the Lebanese government.
Southern Lebanon military intelligence head Suhil Bahij Gharb reportedly handed Hezbollah classified information from an international war room.
Lebanon is at a crossroads. This election offers a chance for the country to reclaim sovereignty, strengthen state institutions, and ensure significant foreign aid.
"We call on all actors to avoid any actions, including the destruction of civilian property and infrastructure, that could jeopardize the cessation of hostilities," it continued.
Israel and Hezbollah agreed to a US-brokered 60-day ceasefire that calls for a phased Israeli military pullout after more than a year of war.
“We look forward to long-term stability in the south through the army carrying out its duties in full cooperation with UNIFIL," said Lebanon's caretaker Prime Minister Najib Mikati.
Earlier, the Lebanese Armed Forces said that it is preparing to deploy its forces to southern Lebanon, Reuters reported on Wednesday.
"Lebanon strongly condemns any attack on UNIFIL and calls on all sides to respect the safety, security of the troops and their premises," Lebanese Foreign Minister said.
The military noted that Friday's attacks came after Hezbollah caused damage to the UNIFIL posts in Ramyeh and Chamaa on Tuesday.
Italian sources said an investigation into the facts was under way. Foreign Minister Antonio Tajani told Italian media that Hezbollah might be responsible for the attack.