On the Ides of March (15 March; see Roman calendar) of 44 BC, Caesar was due to appear at a session of the Senate. Several Senators had conspired to assassinate Caesar. Mark Antony, having vaguely learned of the plot the night before from a terrified liberator named Servilius Casca, and fearing the worst, went to head Caesar off. The plotters, however, had anticipated this and, fearing that Antony would come to Caesar's aid, had arranged for Trebonius to intercept him just as he approached the portico of the Theatre of Pompey, where the session was to be held, and detain him outside (Plutarch, however, assigns this action to delay Antony to Brutus Albinus). When he heard the commotion from the Senate chamber, Antony fled.
Emperor Claudius rebuilt Pompey's Theatre after it had been destroyed by fire, organising special fights at the re-dedication which he observed from a special platform in the orchestra box.