The outgoing deputy force commander of the United Nations Interim Force in Lebanon (UNIFIL) was injured on Friday after a convoy taking peacekeepers to Beirut airport was "violently attacked", UNIFIL said.
The mission demanded a full and immediate investigation by Lebanese authorities and for all perpetrators to be brought to justice, it said in a statement.
Lebanon's President Joseph Aoun condemned the attack on Saturday, saying that security forces would not tolerate anyone who tries to destabilise the country, according to a statement from his office.
Interior Minister Ahmad al-Hajjar called for an emergency meeting before noon on Saturday to discuss the security situation, Lebanese state news agency NNA reported.
"He affirmed the Lebanese government's rejection of this assault that is considered a crime against UNIFIL forces," NNA reported, citing the minister.
He also gave instructions to work on identifying the perpetrators and referring them to the relevant judicial authorities.
The minister told reporters on Saturday that more than 25 people had been detained for investigation over the attack.
The United States condemned the attack that it said wounded U.N. peacekeepers. The State Department statement said the attack was carried out "reportedly by a group of Hezbollah supporters", referring to the Iran-backed militant group in Lebanon.
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