What is ironic about Oedipus calling Creon a murderer in

The irony lies in the fact that Oedipus himself unknowingly killed his own father, Laius, and married his mother, Jocasta. He is essentially accusing Creon of a crime that he himself has committed. Oedipus is unaware of his past actions and sees himself as a victim of fate, while in reality, he is responsible for the tragic events that have unfolded. This irony deepens the tragedy of the play and highlights the complexities of human existence.