PHNOM PENH/BANGKOK - Thailand's caretaker Prime Minister Anutin Charnvirakul said in a media interview on Tuesday that the country's military has lodged a protest with Cambodia over an explosion in the border area that injured a Thai soldier.

Earlier Tuesday, Thailand's 2nd Area Command stated on social media that Cambodia violated the ceasefire agreement by firing a mortar round in the border area at around 7:25 am local time, leaving one Thai soldier injured.

The Thai Ministry of Foreign Affairs has sent a letter to its Cambodian counterpart, notifying that Cambodia has violated the ceasefire declaration, according to Anutin.

Anutin stressed that while Thailand is strictly abiding by the ceasefire terms, it is fully prepared to respond to all possible scenarios.

Thai Army spokesperson Winthai Suvaree said on Tuesday that the Thai military has issued a warning to Cambodia to exercise caution and strictly adhere to ceasefire measures.

He added that the local Thai military unit was contacted by the Cambodian side afterward, which claimed that the incident was not intentional but rather a mistake made during their personnel's operations.

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Also on Tuesday, two Cambodian soldiers were injured in the morning when an explosive accidentally exploded in a pile of garbage in a border area in Cambodia's Preah Vihear province, Cambodian Defense Ministry's spokesperson Lt. Gen. Maly Socheata said.

The working teams of both countries have consulted, exchanged information, and jointly addressed the issue accordingly.

Most of Cambodian evacuees return home

Separately, Some 68.4 percent of the Cambodian evacuees from a recent border conflict with Thailand have returned to their homes so far, Cambodia's Interior Ministry said on Tuesday.

Spokesperson for the ministry Touch Sokhak said that about 444,179 out of 649,023 Cambodian evacuees have returned to their homes. "Roughly 204,844 people, including 108,466 women and 66,892 children, remain in displacement camps," he said in a press briefing.

Cambodia and Thailand agreed to an immediate ceasefire on Dec 27, 2025, after three weeks of armed conflict that caused casualties on both sides.

On Monday, Cambodia re-proposed to Thailand to convene a special meeting on border demarcation in the second or third week of January in Cambodia's Siem Reap province, said a press release from Cambodia's State Secretariat of Border Affairs.

The Cambodian side has once again requested the Thai side, through a Note Verbale dated Jan 5, 2026, to convene a special meeting of the Cambodia-Thailand Joint Boundary Commission in the second or third week of January 2026 in Siem Reap province, it said.

The re-proposed meeting aims to discuss the survey and demarcation works, as well as address the issue that Thai military forces have been conducting activities violating Cambodia's territorial integrity and sovereignty, the press release said.

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The re-proposed meeting was made after the Thai side postponed Cambodia's earlier request for the meeting in the first week of January 2026 in Siem Reap province, citing the reasons of waiting for internal procedures and the ongoing presence of landmines in border areas.