It has been four years this week since ethnic Karen activist Porlachee "Billy" Rakchongcharoen went missing in what is believed to be an enforced disappearance.
Billy, who fought against eviction orders and had been in conflict with government officials at Kaeng Krachan National Park in Phetchaburi, was last seen on April 17, 2014, in the custody of state officials.
He was arrested by Chaiwat Limlikhit-aksorn, the then park chief, who claimed he detained Billy because he found wild honey in the activist's possession after finding him roaming in the protected forest. The government is seeking world heritage status for the forest.