New Delhi, Dec. 18 -- The United States government reportedly warned Americans about travelling to the border area of Thailand and Cambodia as tensions increase between the two neighbouring countries.

The US Embassy in Thailand issued a security alert to American tourists on December 16, warning of an "escalation of armed conflict" at the popular Asian destination.

"US citizens should avoid all travel within 50 kilometers [about 31 miles] of the Thailand-Cambodia border, due to active hostilities and the unpredictable security situation," the alert said.

Conditions on both sides "remain volatile," it added, and it is an "unpredictable security situation."

"US citizens should avoid all travel within 50 kilometers of the Thailand-Cambod...