BANGKOK: Thailand temporarily closed two of its border crossings with Cambodia to tourists on Saturday after a Cambodian soldier was killed in a recent military clash between the two uneasy neighbours.

There has been sporadic violence between the two neighbours since fighting first broke out in 2008, resulting in at least 28 deaths.

A Cambodian soldier was killed in the most recent outbreak on May 28 in an area known as the Emerald Triangle, where the borders of Cambodia, Thailand and Laos meet.

The Thai and Cambodian militaries agreed to ease tensions the following day, but Cambodia then said it would keep its troops in the area, despite Thailand urging it to withdraw.

The Royal Thai Army took control of the "opening and closing" of all border crossings it shares with Cambodia on Saturday, citing a "threat to Thailand's sovereignty and security".