Iran said Saturday that it was ready for "constructive talks" with Lebanon on restoring Tehran-Beirut flights after a decision to bar two flights from landing triggered violent protests in Beirut.

The army on Saturday fired tear gas to disperse a crowd of Hezbollah supporters that again blocked the road to the airport after the group officially called for a "popular sit-in" to denounce Lebanon's banning of two Iranian planes from landing in Beirut.

Video footage shows tear gas canisters falling on peaceful protesters during a speech by Hezbollah official Mahmoud Qamati, but army sources told TV networks that the tear gas was fired after other protesters "blocked the airport road and attacked army vehicles."

Lebanese official media said an Israeli drone struck a vehicle in the south on Saturday, hours after an earlier raid and days before a deadline to complete the withdrawal of its troops.

"An Israeli drone... carried out a strike" on a vehicle in the Iqlim al-Tuffah area, the National News Agency reported, adding that the vehicle caught fire.

Interior Minister Ahmad al-Hajjar said 26 people were arrested after protesters attacked a convoy transporting U.N. peacekeepers to Beirut airport on Friday, injuring a top commander.

Ahmad Hajjar, speaking after a security meeting on Saturday, condemned the attacks and said the investigation is ongoing, with detainees being questioned to release the innocent and prosecute those responsible.

President Joseph Aoun has vowed to punish the perpetrators of an attack on a United Nations peacekeeping convoy, with authorities set to hold an emergency meeting on Saturday.

The U.N. and Lebanese authorities have condemned Friday's attack, which came as Hezbollah supporters for a second night blocked the road to the country's only international airport over a decision barring two Iranian planes from landing there.

Lebanese authorities are set to hold an emergency meeting on Saturday after a deputy commander with the U.N. peacekeeping force in the country was injured during an attack on a convoy taking him to the airport.

Hezbollah supporters have been blocking the road to the country's only airport for two consecutive nights over a decision barring two Iranian planes from landing in Beirut.

Hezbollah and its ally the Amal Movement appeared to be scrambling to distance themselves from Friday's attack on UNIFIL vehicles near Beirut's airport.

Hezbollah's Al-Manar TV said in a statement posted on its social media accounts that “unruly elements caused chaos with suspicious objectives on the Beirut airport road.”

The United Nations Interim Force in Lebanon on Friday demanded a "full and immediate investigation by Lebanese authorities" Friday after one of its vehicles was torched by Hezbollah supporters on the airport road, wounding its outgoing deputy commander.

"Attacks on peacekeepers are flagrant violations of international law and may amount to war crimes," the UNIFIL peacekeeping force said.

A vehicle emblazoned with the logo of the U.N. peacekeeping force in Lebanon was torched late Friday as supporters of Hezbollah again blocked the road to Beirut airport.

The charred vehicle lay abandoned by the roadside as Lebanese troops deployed in response to the protest and managed to reopen the road and restore order in the area.

Iran accused Israel on Friday of disrupting flights from Tehran to Beirut, after a decision barring two Iranian planes from landing in the Lebanese capital sparked protests.

Israel has repeatedly accused Hezbollah of using Lebanon's only airport to transfer weapons from Iran and struck the area during its war with the Tehran-backed militant group which ended late last year.