The Food Empowerment Project recommends that you do not buy cocoa products from West Africa, unless from a worker coop. This is due to the increased risk of slavery and trafficking in this area.
"Where we found that a cocoa supplier could not satisfactorily demonstrate that they were buying from a cooperative, we stopped trading with them"
The statement gave both the region and the product that was being supplied, which is why I would identify it as a specific example.
The company has not reported any specific incident.