US President Donald Trump has weighed in on the three-day conflict at the Thailand and Cambodia border, where 33 people have been killed in the fighting

Tensions have bubbled between the two neighbors for months, flaring on Thursday as Cambodia and Thailand exchanged fire.

Tensions between Thailand and Cambodia have been escalating since May 28, following a brief exchange of fire in the disputed border area. The incident resulted in the death of a Cambodian soldier. Since then, both countries have closed their borders. Editor’s Choice: Multiple Countries Issue Travel Warnings for Thailand and Cambodia

The FCDO travel advice for Thailand says the same about the border crossing, but adds: “Take extra care and stay alert in border areas and follow the instructions of local authorities, especially at tourist destinations such as the Preah Vihear temple, the Ta Kwai temple and the Ta Muen Thom temple.