Long-simmering tensions on the Thai-Cambodian border exploded into clashes last week, including exchanges of artillery fire and jet fighter sorties, the worst fighting between the Southeast Asian neighbours in over a decade.
The clashes claimed at least 43 lives and left more than 300,000 people displaced.
A truce was achieved on Monday, following a push by Malaysia and phone calls from US President Trump who threatened to hold off tariff negotiations with both countries until fighting stopped.
Thailand and Cambodia previously faced tariffs of 36 per cent for sending goods to the US, their largest export markets.Â
Following further negotiations, they would now pay a 19 per cent tariff, the White House announced on Friday.
In Bangkok, Thai government spokesperson Jirayu Houngsub told reporters on Friday that two Cambodian soldiers had been sent back, and the remaining 18 were being processed for violating immigration law.
"The Cambodian soldiers intruded on Thai territory and the army took them into custody, treating them based on humanitarian principles," he said.
The Cambodian defence ministry repeated its call for Thailand to return all the detained soldiers.
Defence ministers and military leaders from both sides, who were previously scheduled to meet in the Cambodian capital next week, will now hold talks in Malaysia after Thailand sought a neutral venue for the meeting.
"Defence attaches from other ASEAN countries will be invited as well as the defence attaches from the US and China," a Malaysian government spokesperson told reporters, referring to the Southeast Asian regional bloc that the country currently chairs.
Thailand and Cambodia have for decades claimed jurisdiction over undemarcated points along their 800km land border, with ownership of several ancient temples at the centre of disputes.
In May, a Cambodian soldier was killed in a skirmish, leading to a troop build-up and a diplomatic crisis, which eventually snowballed into five-days of intense fighting in late July.
