Thailand’s military has launched air attacks along its disputed border with Cambodia as the Southeast Asian neighbours traded blame for clashes that killed one Thai soldier and wounded three Cambodian civilians.

In a statement on Monday, a spokesman for the Thai military, Major-General Winthai Suvari, said Thailand deployed the aircraft to “suppress” Cambodian attacks after the death of the Thai soldier in the Ubon Ratchathani province.

The Thai statement said the Cambodian soldiers had “fired small arms and curved weapons” from about 5:05am (22:00 GMT on Sunday), with reports that one of its soldiers had been killed received at about 7am (00:00 GMT)

The Cambodian military, in a statement on Facebook, said it was the Thai forces who had launched the first attack at 5am local time on Monday. It added that the clashes followed “numerous provocative actions for many days” by Thai forces.

Later in the day, the deputy governor of the Cambodian border region of Oddar Meanchey said three civilians, including one woman, were wounded in Thai attacks.