A glitch in a system used by the Central Bank of The Gambia triggered deposits of various amounts in US dollars to 27,000 accounts held in commercial banks.
Most of those affected were civil servants whose monthly salaries are at least $100 (£83). They received $20,000 (£16,000) in their accounts.
The Central Bank has blamed a failed data transfer system from commercial banks for the error, and has since blocked the affected accounts to allow for a reversal of the deposited money.
This incident happened weeks after unknown hackers claimed to have taken two terabytes of vital and sensitive data from the central bank.
The authorities however say the overpayments had no link to hacking.
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