Thailand’s army is warning that it may have to“exercise the right of self-defense” in response to continuing incidents it blames on Cambodia in which Thai soldiers patrolling along the two countries’ border have been wounded by land mines.

A Thai soldier was injured by a landmine near the Cambodian border on Tuesday, the Thai army said, days after the Southeast Asian neighbours agreed to a ceasefire following last month's deadly five-day conflict.

Cambodia and Thailand agreed to uphold a ceasefire, more than one week after a US-backed truce ended the deadliest clashes between the Southeast Asian neighbors in recent history.