Thailand's army sent home two Cambodian soldiers from a group of 20 on Friday, ahead of a key meeting in Malaysia next week where defence ministers and military commanders will hold talks aimed at maintaining a ceasefire along their disputed border.

Cambodia on Friday welcomed the return of two wounded soldiers who had been captured by the Thai army after the two sides had already implemented a ceasefire to end five days of combat over competing territorial claims.

The ceasefire reached in Malaysia was supposed to take effect at midnight on Monday, but it was quickly tested as Thailand and Cambodia continued to accuse each other of violating the truce agreements.