The military said in a statement that seven soldiers have had “action taken against them” for “contributing and participating in murder”.
The massacre was being investigated by two Reuters journalists – Wa Lone, 31, and Kyaw Soe Oo, 28 – who were subsequently arrested in December and are still behind bars facing charges of violating the country’s Official Secrets Act.
The authorities told Reuters in February the military had opened an internal investigation independently and that it was unrelated to the Reuters reporters, who are accused of obtaining unrelated secret government papers.
The Rohingya men from the northern Rakhine village of Inn Din were buried in a mass grave in early September after being hacked to death or shot by Buddhist neighbors and soldiers.
The murders were part of a larger army crackdown on the Rohingya, beset by allegations of murder, rape, arson and looting, unleashed in response to militant attacks on security forces in late August. The United Nations and the United States have described it as ethnic cleansing – an accusation Myanmar denies.
“Four officers were denounced and permanently dismissed from the military and sentenced to 10 years with hard labor at a prison in a remote area. Three soldiers of other rank were demoted to the rank of ‘private’, permanently dismissed from the military and sentenced to 10 years with hard labor at a prison in a remote area,” read the military statement.
It added that legal proceedings against the police personnel and civilians “involved in the crime” were still under way.
On 10 January, the military said the 10 Rohingya men belonged to a group of 200 militants who had attacked security forces. Buddhist villagers attacked some of them with swords and soldiers shot the others dead, the military had said.
The military’s version of events is contradicted by accounts by Rakhine Buddhist and Rohingya Muslim witnesses.
Buddhist villagers reported no attack by a large number of insurgents on security forces in Inn Din. And Rohingya witnesses told Reuters that soldiers plucked the 10 from among hundreds of men, women and children who had sought safety on a nearby beach.
Nearly 700,000 Rohingya Muslims have crossed into southern Bangladesh since August, creating one of the world’s largest refugee camps.