Israeli Prime Minister Benjamin Netanyahu said Sunday that Israel would do what it has to in order to "enforce" the ceasefire with Lebanon.

A woman was killed and several other people wounded Sunday when Israeli forces opened fire on a group of residents attempting to return to the village of Houla in southern Lebanon, the Lebanese state-run news agency reported.

There was no immediate comment from the Israeli military on the incident, which comes two days before the deadline for implementation of a ceasefire agreement that ended the latest war between Israel and Hezbollah in late November, including a full withdrawal of Israeli forces from southern Lebanon.

Senior Hezbollah official Wafiq Safa has denounced Friday's attack on UNIFIL near Beirut's airport during an angry protest by Hezbollah supporters.

Safa said "what happened with UNIFIL... is unacceptable."

Lebanon denied permission for Iranian flights to land in Beirut twice this week after the United States warned Israel might shoot the planes down, a Lebanese security source told AFP.

Hezbollah on Sunday urged the Lebanese government to reverse a decision blocking Iranian flights from landing in Beirut, following U.S. warnings.

The Iran-backed group said in a statement that it "demands that the government reverse its decision to ban Iranian planes from landing at Beirut airport and take serious measures to prevent the Israeli enemy from imposing its dictates."

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.