In 485 BC once Cassius had left office he was condemned and executed. Livy says that the method of his trial is uncertain. Livy's preferred version is that a public trial on the charge of high treason was held on the orders of the quaestores parricidii Caeso Fabius and Lucius Valerius, at which Cassius was condemned by the people, and subsequently by public decree his house was demolished (being near the temple of Tellus). The alternative version is that Cassius' own father conducted a private trial (presumably exercising authority as pater familias, although Niebuhr argues that it was impossible that a man who had been thrice consul and twice triumphed should still be in his father's power.) and put his son to death, and subsequently dedicated his son's assets to the goddess Ceres, including by dedicating a statue to her with the inscription """given from the Cassian family"". Dionysius states that he was hurled from the Tarpeian Rock.