A Lebanese security official said Friday that the head of the money changer's union has been arrested on Thursday and is currently under investigation.
"The head of the money changers syndicate, Mahmoud Mrad, was arrested at the request of Lebanon's financial prosecutor" on charges of "tampering" with the value of the Lebanese pound, the official said.
"Money exchange houses have been buying dollars at a very high price," driving up the exchange rate, the source told AFP.
Lebanon is in the thick of its worst economic crisis since its 1975-1990 civil war, compounded by the coronavirus epidemic.
Forty-five percent of Lebanon's population now lives below the poverty line, and tens of thousands of people have lost their jobs or seen salaries slashed because of the downturn.
The pound had been pegged to the dollar at 1,500 since 1997 but the country's worst economic crisis in decades has seen its value plunge by more than half on the black market.
To stem a further devaluation, the central bank ordered exchange offices late last month to cap the rate at 3,200 to the dollar.
But the pound has since fetched more than 4,000 to the greenback, prompting a government crackdown on incompliant offices.
To escape prosecution, many money exchange offices have closed their doors, AFP reported.
But some have continued to operate secretly, sometimes delivering money to their clients' homes.
"Over the past two weeks, around 50 money changers were arrested," the security source said.
"Those who have a licence signed a pledge to abstain from tampering with the value of the dollar and were later released," he added.
"Those without a licence were transferred to the judiciary for investigation."
To attempt to ease high demand for the greenback, commercial banks in April started to allow pound withdrawals from dollar savings at double the official rate. But the value of the dollar on the black market has continued to climb.
"We are forced to buy dollars on the black market to supply dollars to businessmen, especially those who trade in food," one money changer told AFP on condition of anonymity.
"The central bank and commercial banks are not giving out dollars, so the only way to find them is on the black market," he stressed.
Last week, the Lebanese government adopted an economic reform plan and signed a request for financial assistance from the International Monetary Fund to survive the crisis.
