What news does the messenger from Corinth bring to Thebes?

The messenger from Corinth brings the news that Polybus (king of Corinth, who Oedipus believes to be his father) has died. He also shares the news, once Oedipus expresses fear he might still marry his mother, that Oedipus is not the true child of the Corinthian monarchs, and explains how Oedipus was given him as a babe.