Background
On 23 June 2026 at 09:38 local time, the Coordination Group (CLG) of the Kingdom of Cambodia facilitated a field observation visit by the ASEAN Observer Team (AOT) led by the Head of Mission from the Philippines to Prey Chan Village, O’Bei Choan Commune, O’Chrov District, Banteay Meanchey Province.
Cambodian authorities reported that the area had been subjected to attacks, the installation of barbed wire, and the unlawful deployment of container structures by the Thai military, resulting in multiple Cambodian families being unable to return to their homes. The visit included monitoring compliance with and implementation of measures set out in the Joint Statement following the entry into force of the ceasefire.
The Cambodian government stated that it does not recognize any change to the boundary line resulting from the use of force and called for the Cambodia–Thailand Joint Boundary Commission (JBC) to commence demarcation work promptly in accordance with point three of the Joint Statement of the 3rd Special Meeting of the Cambodia–Thailand General Border Committee (GBC) on 27 December 2025. Cambodia has also reiterated its full support for strengthening the AOT mandate to verify implementation of the ceasefire and agreed measures between the two countries.
Key Developments
The Ministry of National Defence reported that the Coordination Group escorted the AOT to verify and report on the border situation in Prey Chan village, as part of ongoing observation and reporting obligations. The statement noted that several Cambodian families remain unable to return to their residences because of the reported security incidents and physical barriers at the site.
Institutional Role
The Coordination Group (CLG) functions as the Cambodian facilitator for international observation visits to contested border areas, enabling external teams to access sites for verification and reporting. The ASEAN Observer Team (AOT) is tasked by member states to observe and report on compliance with ceasefire arrangements, and the Cambodia–Thailand Joint Boundary Commission (JBC) holds the mandate to carry out technical demarcation work when engaged by both parties.
Implications for Regional Diplomacy
The Ministry’s public communication frames the incident as requiring technical demarcation and multilateral observation to restore civilian access and confidence. By referencing the GBC joint statement of 27 December 2025, Cambodian authorities tied immediate border management actions to previously agreed procedural steps between Cambodia and Thailand.
