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.
More top news
Fourteen babies in the Border region were born on Saturday, the same day as her Royal Highness, Princess Charlotte.
Gatehouse of Fleet hosts exhibition of German-born architect who received a medal from Edinburgh College of Art this year.
Kendal town council wants to make Kendal the best destination for arts, culture and festivals in the rural North West.