KUALA LUMPUR, Malaysia (AP) — Thailand and Cambodia agreed Thursday to establish interim observer teams to monitor a fragile ceasefire that ended five days of of deadly armed border clashes, even as the fate of 18 Cambodian soldiers captured by Thailand remains unresolved.

Both sides agree to extend truce, though Thailand still holds 18 Cambodian soldiers taken hours after truce implemented.

Cambodia and Thailand's top defence officials agreed on Thursday to allow observers from the ASEAN regional bloc to inspect disputed border areas and help ensure hostilities do not resume following a violent five-day conflict that ended in a ceasefire late in July.