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
Performers gather for the free summer event takes place against beautiful backdrop of Dumfries and Galloway’s Morton Castle
Environment Agency and Annan District Salmon Fisheries Board crackdown on illegal fishing
Dumfries and Galloway community theatre company celebrates accolade as curtain falls on month-long run in Edinburgh