Cynthia Zarazir, who was elected to parliament in May polls, is the latest in a growing number of angry depositors suffering the consequences of an unprecedented financial crisis.
Deep divisions among lawmakers have raised fears Lebanon could be left without a president after Michel Aoun's mandate expires at the end of October.
Six incidents of hold-ups by depositors took place on Friday in different banks in Beirut, including one armed with a hunting rifle.
Israeli media had earlier reported that Tel Aviv will provide gas to Lebanon from the offshore Leviathan field through Jordan under an agreement with the United States.
Talks with the International Monetary Fund resumed in September this year but Lebanese officials have yet to submit a comprehensive recovery plan.
Severe fuel shortages and power cuts have forced many hospitals in Lebanon to scale back operations. Some $4 million of the total is for water stations and facilities that serve more than two-thirds of the country’s population.
But the militant group's opponents have warned that the move can invite US sanctions on a country that's already reeling under an economic crisis.
Lebanon is currently experiencing a severe fuel shortage and the past week has seen multiple incidents of tankers being hijacked. Hospitals have warned that they are low on fuel and may be forced to shut down.
The bank said while it had spent more than $800 million on fuel in the last month and the bill for medicines had multiplied, those goods were still absent from the open market and were being sold at prices that exceed their value.
The bloc said it is ready to impose sanctions on Lebanon's ruling elite, including a travel ban and asset freeze, for obstructing the process of forming a functioning government.
Lawmakers have tasked ex-premier and billionaire tycoon with forming a government and ending a year of political deadlock that has further crippled the economy.
The deal comes as Lebanon, which is in the throes of an economic meltdown threatening its stability, has all but run down in foreign reserves and faces a growing shortage of fuel, medicine and other basic goods.
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