If they decide that the killer planned to kill the other person, they must not allow him to stay in their city. But if they decide that it was done accidentally, they must protect the killer from being killed by the dead person’s relative. They must send the killer to one of the cities where he will be safe/protected, and allow him to stay there until the Supreme Priest dies. After that, the killer may go back to his home, because the dead person’s relative no longer has the right to get revenge.