Thailand and Cambodia have agreed to an "immediate and unconditional ceasefire" after five days of fighting at their border killed at least 33 people and displaced tens of thousands.

"There are reports of casualties and the Thai government is ordering the evacuation of certain areas," the U.S. State Department said in an alert.

Clashes between Thai and Cambodian troops at their disputed border have killed at least 12 people, Thai authorities say. The fighting marks an escalation of a dispute between the two South East Asian neighbours that dates back more than a century.

Leaders of Thailand and Cambodia are scheduled to sit down in Malaysia for ceasefire talks on Monday, the Associated Press reported. Newsweek has reached out to the Cambodian and Thai foreign ministries for comment via email on Sunday.

A long-simmering border row between Thailand and Cambodia has exploded into deadly conflict, killing 14, displacing over 100,000, and prompting a UN emergency meet amid fears of wider war.

With a ceasefire now in place, Thailand and Cambodia are pivoting toward sustained diplomatic engagement through a three-tier bilateral framework, as both nations commit to resolving their border disp