In the prologue of oedipus rex, Creon returns from delphi with a command from the oracle to find and punish the murderer of laius.
Step-by-step explanation:
The king of the city Thebes, Oedipus sends Creon to the Oracle. The citizens of Thebes face a terrible fate in the form of plague. So, to find an end to it, Oedipus sends Creon for seeking a solution. He returns with a message to drive the Laius’s murderer out.
He insists that the murderer is staying in Thebes, and exiling him off the land will turn the city to a normal state. Therefore, Oedipus warns the people who are supporting the murderer and asks them to hand him over to the king.