On September 18, 2025, the Thai police fought Cambodian protesters in proximity to the widely contested Preah Vihear frontier, where incessant territorial disputes remain a source of instability. There was a mobilization of protesters to condemn what was termed as Thai infiltrations, and the government maintained its claim that it was implementing order.
Crowds were reportedly dispersed using tear gas when protesters tried to cross restricted areas. Various protesters and police officers had minor injuries. This reflects the vulnerability of the Thai-Cambodian relations, which have experienced recurring outbursts in border demarcation amid ongoing diplomatic negotiations. Both governments are currently feeling the heat to put things into check before they get out of control.