At the time Casca held the office of tribune of the plebs. After the assassination he fled Rome, and his colleague in the tribunate, Publius Titius, had him deprived of his office. Casca joined Marcus Junius Brutus and Gaius Cassius Longinus, the leaders of the assassins, during the Liberators' civil war against the Second Triumvirate, Caesar's former supporters. He seems to have died, probably by suicide, in the aftermath of their defeat at the Battle of Philippi, in October 42 BC.