The campaign was launched in January by Lothian and Borders Police, Fife Constabulary and Central Scotland Police.
They asked members of the public to report suspicions about people making money illegally to the charity Crimestoppers.
Up to 400 officers have been involved in the three-day operation, which begun on Wednesday.
The police say Crimestoppers reported a 31 per cent rise in all calls across the East of Scotland, which was used for the operation this week.
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More than 100,000 Rugby fans are expected in the city this weekend as St James' Park hosts its final match World Cup match.
Mainly dry, odd shower - feeling cooler on Sunday
What has the weekend weather got in store for the Border region?