[1/2] Soldiers stand next to military vehicles as people gather to protest against the military coup, in Yangon, Myanmar, February 15, 2021.
A spokesman for the KNDF said its soldiers entered Nan Neint on Sunday and found dead bodies scattered at a Buddhist monastery.
Video and photographs provided by the KNDF and another group, the Karenni Revolution Union (KRU), showed bullet wounds to the torso and heads of the dead bodies and bullet holes in the walls of the monastery.
"Since all the dead bodies were found within the compound of Nan Nein monastery, it is evident that this was a massacre."
At least 3,137 people have been killed in the military crackdown since the coup, according to the non-profit Assistance Association for Political Prisoners.