DSI boss Pol Lt-Colonel Korrawat Panprapakorn said yesterday (August 11) that he had tasked an investigation team to file dossiers in the case and had sent a letter to the attorney-general. 
Korrawat said the prosecutor’s decision to drop the charges contradicted DSI evidence. He wanted the attorney-general to consider the dossiers instead. 
Billy disappeared in April 2014 after a reported conflict with Kaeng Krachan National Park officials. Billy had helped Karen people sue officials after they were evicted from their homes. 
The DSI maintains that former park chief Chaiwat Limlikit-aksorn and three others accused in the death of Billy should have been charged.

DSI unhappy over decision to drop charges in Billy case, wants AG to intervene

The Department of Special Investigation (DSI) director-general expressed disagreement over the prosecutor’s decision to drop charges against those accused in the murder of Karen rights activist Porlajee “Billy” Rakchongcharoen.