Lawyer Aun has petitioned the Department of Special Investigation (DSI) to investigate 13 private companies and 33 individuals regarding encroachment on Khao Kradong in Buriram Province, involving construction over public land owned by the nation.
At 11:00 a.m. on 8 June 2026 at the Department of Special Investigation, Mr. Phattharaphong Suphakson, also known as Lawyer Aun from Buriram, submitted a letter to Pol. Lt. Col. Yutthana Praedam, Director-General of the DSI. He requested an investigation into the facts concerning the construction of buildings or compounds, landfilling, and covering waterways, streams, and public roads—public property used collectively by the people—at Khao Kradong in Buriram Province. The activities appear to be commercial in nature and may severely impact the environment and nature. This constitutes an offense under the Land Code concerning encroachment on public property. Ms. Arunsri Witchawut, Director of the Special Case Management Division, accepted the letter on behalf of the DSI.
Mr. Phattharaphong stated that today he submitted the letter to the DSI Director-General concerning the land dispute at Khao Kradong, Mueang District, Buriram Province. He clarified that he was not addressing land with official title deeds but focusing on two areas: first, 5,083 rai of land without title deeds, all owned by the State Railway of Thailand; second, public-use streams, canals, watercourses, drainage ditches, and public roads used commonly by the people. Yet, groups of individuals have constructed buildings over these public lands. The offense is complete and no longer requires proof of ownership. Claims that the case is still under consideration by the Buriram Provincial Court are invalid because 13 corporate entities and 33 individuals have built structures on public land. Therefore, he urges the DSI to investigate.
He emphasized that whether the public land or waterways belong to the State Railway of Thailand or others, no one has the right to construct buildings on them. Such land must remain under the State Railway of Thailand’s ownership; in layman’s terms, it is considered vacant land. Thus, arguments citing the absence of a final court judgment or the ongoing case at Buriram Provincial Court are unacceptable. He reaffirmed that the DSI certainly has the authority to proceed with this case.
Regarding Khao Kradong land, it is divided into four parts: one part has a title deed, another part has Sor Kor 1 and Nor Sor 3 documents, while the remaining two parts, or 50 percent, lack any land title documents. The case he raises today concerns entirely untitled land on which construction has nevertheless occurred, specifically over public paths.