#What should happen if someone who has been killed is found lying in a field and it is not known who attacked him?

The elders and judges should measure to determine the nearest city to the killed man. [21:1-2]

What must happen if a man commits a sin worthy of death and is hanged on a tree?

The man's body must not remain all night on the tree, but must be buried the same day so the land will not be defiled. [21:22-23}