In the first act of Oedipus Rex, by Sophocles, Creon comes to Oedipus what he has learned from the gods at the Oracle of Apollo at Delphi. He has learned that the gods are punishing the city of Thebes because the murderer of the previous king, King Laius, is residing within the city. The gods are commanding that the murderer be found and punished by either being executed or exiled. Creon also reports that Laius was killed while traveling to Delphi. It was reported and believed at the time that he was killed by a band of robbers, but the city did not have time to investigate because at the time the city was also being plagued by the Sphinx.