Thailand has since accused Cambodian troops of violating the ceasefire multiple times, a charge denied by authorities in Phnom Penh, who instead allege that the Thai military has wrongfully detained a number of its soldiers.

Cambodia on Thursday requested Malaysia to intervene to "swiftly" secure the release of its soldiers in the Thai army's custody.

The leaders of Cambodia and Thailand were meeting in Malaysia on Monday to try to reach a ceasefire deal on the fifth day of their fierce border conflict, amid an international effort to halt the fighting.