The government says anyone who fraudulently claimed Covid-19 cash has 20 days to confess or face the consequences.
Nine different schemes were set up by the government to provide financial support to individuals and businesses.
Treasury Minister Dr Alex Allinson says a formal review of all claims under the scheme will take place in the near future.
He says anyone who mistakenly claimed support can come forward and return the money before August 4 - after that date claimants may face possible sanctions.
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