The European Central Bank (ECB) has approved an increase in emergency credit for Greece's banks, according to a Greek source.
The banks need the credit to stay afloat, particularly as Greeks have been withdrawing more money amid uncertainty over the country's future.
The move came after the ECB's governing council held a teleconference to discuss the issue.
A Greek banking official said the precise sum of the new credit will not be announced.
"The Greek banking system has no financing problems, and central bankers are looking to a positive outcome" during Monday's meetings on Greece, said the official.