Thailand and Cambodia agreed Monday to an unconditional ceasefire during a meeting in Malaysia, in a significant breakthrough to resolve five days of deadly border clashes that have killed dozens and displaced tens of thousands.

Cambodian Prime Minister Hun Manet and Thai Acting Prime Minister Phumtham Wechayachai agreed to a halt in fighting, starting at midnight, while appearing with Malaysian Prime Minister Anwar Ibrahim during a meeting held under U.S. pressure in the Malaysian administrative capital of Putrajaya. The Cambodian and Thai leaders hailed the meeting’s outcome and shook hands at the end of a brief news conference.

An Associated Press journalist in Cambodia reporting from close to the border with Thailand where artillery duels had been taking place said the sounds of shelling stopped about 10 minutes before the ceasefire came into effect. Reports from other fronts in the fighting were not immediately available.

The fighting began Thursday after a land mine explosion along the border wounded five Thai soldiers. Both sides blamed each other for starting the clashes, that have killed at least 35 people and displaced more than 260,000 people on both sides.

Anwar, who hosted the talks as annual chair of the Association of Southeast Asian Nations regional bloc, said both sides have reached a common understanding to take steps to return to normalcy following what he called frank discussions.

“This is a vital first step towards de-escalation and the restoration of peace and security,” Anwar said.

The Malaysian meeting followed direct pressure from U.S. President Donald Trump, who warned that the U.S. might not proceed with trade deals with either country if hostilities continue, giving both sides a face-saving justification for backing away from the fighting. In a statement later Monday on social media, Trump said the two sides had “reached a CEASEFIRE and PEACE... I am proud to be the President of PEACE!”

As part of the ceasefire deal, military commanders from both sides will hold talks Tuesday to defuse tensions while Cambodia will host a border committee meeting on Aug. 4. Anwar said. The foreign and defense ministers of Malaysia, Cambodia and Thailand have also been instructed to “develop a detailed mechanism” to implement and monitor the ceasefire to ensure sustained peace, he added.

Hun Manet said he hoped that bilateral ties could return to normal soon so that almost 300,000 villagers evacuated on both sides could return home.