Myanmar has been in turmoil since soldiers ousted civilian leader Aung San Suu Kyi last month, triggering nationwide protests demanding a return to democracy.
On Wednesday night, military broadcaster Myawady aired a video of a Myanmar businessman confessing to giving her a total of $550,000 over several years.
"Aung San Suu Kyi may have her defects... but bribery and corruption are not her traits," he said, adding that most people in Myanmar will not believe the allegations.
The pope has repeatedly called for an end to violence in Myanmar since the February 1 coup, when the military ousted and detained civilian leader Aung San Suu Kyi.
Myanmar has been in uproar since the putsch, with daily protests demanding a restoration of democracy despite the junta's increasingly forceful attempts to quell dissent.
Myanmar security forces surrounded the staff compound of striking railway workers opposed to the military junta on Wednesday as ousted lawmakers appointed an acting vice president to take over the duties of detained politicians.
In New York, the U.N. Security Council failed to agree on a statement that would have condemned the coup in Myanmar, called for restraint by the military and threatened to consider “further measures.”
The police and military have responded with an increasingly brutal crackdown on demonstrators, with more than 50 people killed and nearly 1,800 arrested.
Shops, factories and banks were closed in Myanmar’s biggest city Yangon on Monday after major trade unions called for a shutdown of the economy as part of the uprising against the country’s military rulers.
The army has said it is dealing with protests lawfully.
National League for Democracy party official Soe Win confirmed some officials were arrested in overnight police operations but the exact number is not known.