Cambodia’s rights commission said ‘intense, high-pitched noises’ broadcast by Thai soldiers along the disputed border threatened to escalate tensions

Cambodia’s former leader Hun Sen has complained about Thailand broadcasting ghost-like sounds across a disputed border, while the country’s human rights commission has accused its neighbour of engaging in psychological warfare, despite both countries agreeing to a ceasefire in July.

Posting on Facebook, Hun Sen, 73, who now serves as Cambodia’s powerful senate president, said Cambodia’s human rights commission had complained to the United Nations about the “intense, high-pitched noises”.

Sen shared a letter dated 11 October from the commission addressed to the UN’s high commissioner for human rights, Volker Turk, outlining what it said was a “grave violation of human rights involving the use of disturbing sounds as a form of psychological intimidation and harassment” along the Thai-Cambodian border.

The Cambodian human rights commission said it had received credible reports from authorities and affected civilians in villages along the border indicating that Thai military units were broadcasting “haunting sounds resembling wailing ghosts through loudspeakers” followed by sounds of aircraft engine noises throughout the night.