At least 23 Cambodians were injured in the incident, according to Cambodian authorities, while Thailand’s military said an unspecified number of Thai officials had also sustained injuries.
Thai authorities erected barbed wire fences in the area last month and for weeks there have been protests by civilians from both sides of the border.
Tensions over disputed areas spiralled into a border conflict in July, when the fiercest fighting between the neighbours in decades killed at least 48 people and temporarily displaced hundreds of thousands.
The fighting ended after both countries agreed to a ceasefire brokered in Malaysia on July 28, and the border has largely remained calm since.
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