The South Korean newspaper, The Hankyoreh, investigated war crimes in Vietnam and this massacre had first came to light from a testimony by an officer whom had overseen the killing.

[2]: 534 [3][1] Colonel Kim Ki-tae, former commander of the Seventh Company, 2nd Marine Division, testified in The Hankyoreh on 9 October 1966 about the event.

[2]: 529  Colonel Kim had reported he oversaw the murder of 29 men who were 'probably just farmers' alongside other civilians, and confirmed by the Hankyoreh's onsite investigation of events.

The raid had been ordered as a punitive action by the Division Headquarters as retaliation for the killing of a ROKA Infantry Soryeong (Major) and a ROK Marine Artillery Jungsa (First Sergeant) three days before by sniper fire.

[2]: 530  The testimony by Colonel Kim had prompted other Korean veterans to testify about mass-killings.