Interpol has released a purple notice on 30 August about an illegal timber trading operation involving four companies in Brazil, which stems from an investigation by the Brazilian Federal Police that uncovered a technique employed by illegal timber traders in the country. The method in question involves obtaining fraudulent forest management plans that declare a higher density of a high-value timber species within a timber concession than actually exists on the ground, allowing criminals to harvest timber from unauthorized areas and report it as if it was legal. These false forest management plans are obtained through bribery or by the operators who forge them.