And suppose the dead person’s nearest male relative finds them outside the city. Then the relative can kill the accused person. The relative will not be guilty of murder.
If he doesn’t go to one of those cities, the dead man’s nearest male relative might become very angry. He might chase the man. If the city is too far away, he might catch him and kill him. But the man running to the city isn’t worthy of death, because he didn’t hate his neighbor.