(Δαρεῖος), the eldest son of Xerxes I., was put to death by his brother Artaxerxes, to whom Artabanus and Spamitres accused him of the murder of Xerxes, which they had themselves committed. (B. C. 465.) The story is told, with some unimportant variations, by the following writers. (Ctes. Pers. 29, ed. Lion; Diod. 11.69 ; Just. 3.1.)
[P.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890