Thai soldiers accused Cambodia of planting fresh land mines along a disputed border.

Thai troops reportedly discovered an anti-personnel mine buried in the explosive-riddled frontier at Sa Kaeo province on December 1.

The PMN land mine was discovered in Ban Nong Chan Village, where a Chinese man lost his leg during an illegal crossing on November 29.

Officers have been sweeping the area for land mines since November 11, and have so far recovered 24 bombs, including 22 PMN mines, one POMZ-2 mine and one PMD-6M mine, authorities said.

Around 16,653 square metres, or 5.77 per cent of the total area, had been cleared since operations began.

Army spokesman Major General Winthai Suvaree said: 'The area is contaminated with land mines that Thai authorities are in the process of clearing according to plan.'

Mine explosions at the border were among the issues that fuelled the deadly violence that erupted between Thailand and Cambodia earlier in July.

The two countries have been fighting for more than a century over several undemarcated sections of their 817-kilometre (508-mile) border, which was originally mapped by France in 1907 while Cambodia was still its protectorate.

But tensions flared in the long-disputed frontier as both accused each other of instigating violence on July 24, which killed at least 48 and temporarily displaced some 300,000 on both sides of the border.

Cambodia - ruled by the former Khmer Rouge henchman Hun Sen - claimed responsibility for the alleged war crime of firing rockets into Thailand that struck a gas station, killing a number of children.

The two nations have reached a shaky truce following talks facilitated by Malaysian Prime Minister Anwar Ibrahim, chair of the Association of Southeast Asian Nations (ASEAN).

But the peace deal, brokered by US President Donald Trump, fell through this month as Thailand accused Cambodia of laying fresh landmines, one of which maimed a soldier in Thailand's Sisaket province.

Hun Sen was a senior officer in the Khmer Rouge, which murdered millions of Cambodians between 1975 and 1979 in one of the world's worst genocides. He then defected to Vietnam, before being installed as Prime Minister, and consolidating his rule in the ensuing years.