Who do you believe killed the boy who decided to leave the village? Was it the soldiers or the rebels

The lieutenant shows the villagers the mutilated bodies of a boy and a man. He informs the villagers that the two attempted to leave the village freely, but the rebels captured, tortured, and killed them. The lieutenant insists that this behavior shows the evil of the rebels and the need for good people to stand up against them. It is very likely the lieutenant ordered the killings to set a precedent for the others not to flee. It is unlikely the rebels were that close at exactly that time for them to be killed by the rebels.