Thai and Cambodian soldiers have exchanged fire on their border for a second day in a brief clash that killed a Thai soldier.
This morning's incident is the latest flare-up in a long-running feud over land around an 11th-century temple.
Southeast Asia's regional grouping ASEAN said the deteriorating situation was undermining confidence in the region and would affect its economic recovery.
A Thai soldier was killed, and four were wounded, in a disputed area around the 900-year-old Preah Vihear temple, which is claimed by both countries.
The soldiers fought with rocket-propelled grenades and guns for about 25 minutes before reaching a ceasefire and agreeing not to reinforce troops.
Three Cambodians, including two soldiers, and a Thai villager were killed in a two-hour clash yesterday.
Cambodian government spokesman Phay Siphan said one of the Cambodians killed yesterday was a tourist visiting the temple overlooking northern Cambodia.
He said ten Cambodian soldiers were wounded, but there were no fatalities today.
