Bangkok: Thai security forces fired tear gas and rubber bullets as they clashed with Cambodian protesters on Wednesday in a disputed border area. It is the most significant escalation since they declared a ceasefire to end a deadly five-day conflict in July. The clash took place at a disputed frontier settlement, which Thailand says is part of its Ban Nong Ya Kaew village in Sa Kaeo province, but Cambodia claims as part of Prey Chan village in Bantheay Meanchey province.

According to Radio Free Asia, Cambodia's Information Minister Neth Pheaktra accused Thai officials of encroaching across the border and said they used tear gas, rubber bullets, and noise-making devices against Cambodian civilians. Cambodian government spokesperson Pen Bona noted that Thai forces used violence to suppress unarmed Cambodian civilians and monks who were protesting peacefully.

Tensions remain high after the ceasefire, especially since Thai soldiers have been wounded by land mines while patrolling the no-man's land between the two countries. Thailand charges that the mines are newly planted in violation of the ceasefire, an accusation vehemently denied by Cambodia.

On Wednesday, Cambodia's Prime Minister Hun Manet called for international intervention, urging pressure on Thailand to respect the ceasefire and fully adhere to Cambodia-Thailand agreements. The two nations' competing territorial claims largely stem from a 1907 map drawn when Cambodia was under French colonial rule, which Thailand has argued is inaccurate.

The International Court of Justice in 1962 awarded sovereignty to Cambodia over an area that included the 1,000-year-old Preah Vihear temple, a decision that still riles many Thais. The court has since reaffirmed its judgment. In June, Cambodia proposed returning to the international court to sort out the border in the disputed areas, a proposal Thailand firmly rejected.