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.

Thailand’s army warned 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.

Saturday’s incident is the third time in a few weeks that Thai soldiers have been injured by mines while patrolling along the border.