Lebanon's public prosecutor Tuesday ordered a probe into rumors on social media on the plunge in value of the local currency that sparked three nights of violent protests.

Hundreds took to the streets from last Thursday to Saturday after the dollar exchange rate soared to almost 5,000 Lebanese pounds on the black market, according to money dealers, despite officially remaining pegged at 1,507 pounds.

A meeting chaired by President Michel Aoun in Baabda later this month is expected to bring together the former presidents, former prime ministers, heads of the parliamentary blocs in addition to PM Hassan Diab and Speaker Nabih Berri.

Finance Minister Ghazi Wazni held talks with a World Bank delegation led by its Mashreq Regional Director, Saroj Kumar Jha, where talks focused on the bilateral partnership between Lebanon and the World Bank, the National News Agency reported on Tuesday.

An Israeli infantry unit accompanied by a police dog combed the road near the Mesgav Am settlement, opposite the town of Adaisseh in Marjayoun, the National News Agency reported on Tuesday.

Security forces deployed "heavily" in the northern town of Halba near several banks and government institutions, the state-run National News Agency reported on Tuesday.

The Lebanese army said it had arrested dozens of suspects for "vandalism", after days of protests triggered by a plunging local currency amid the worst economic crisis in decades.

Prime Minister Hassan Diab on Monday declared “war on corruption” during a meeting with the country’s supervisory bodies.

“Today the whole world is asking Lebanon to combat corruption as a precondition for helping us. In the current situation, we are accused that we have not achieved anything, but this issue has become on the table and it has become the government’s top priority,” Diab said.

President Michel Aoun on Monday stressed the need for “preemptive operations to arrest plotters and instigators of acts of vandalization to curb them and prevent their recurrence,” following days of violent protests in Beirut and Tripoli.

“The acts of sabotage that occurred recently, some of which took a sectarian turn, in addition to the systematic attacks on security and military forces, are no longer acceptable and can lead to dangerous ramifications,” Aoun warned during a Higher Defense Council meeting in Baabda.

President Michel Aoun on Monday convened the country's Higher Defense Council after days of angry protests over a deepening economic crisis.

The United Nations on Monday denied reports referring to possible U.N. withdrawal from Lebanon, stressing that it is not planning to "stop its operations" or "evacuate its staff" from the country.

"In response to speculative stories referring to possible U.N. withdrawal from Lebanon in some media outlets in the past days, the United Nations considers it necessary to deny such unsubstantiated speculations," the U.N. said in an English-language statement.