 After his father's death, Teos invaded the Persian territories of modern Syria and Israel and was beginning to meet with some successes when he lost his throne due to the machinations of his own brother Tjahapimu.Tjahepimu took advantage of Teos' unpopularity within Egypt by declaring his son—and Teos' nephew, Nectanebo II—king.The Egyptian army rallied around Nectanebo which forced Teos to flee to the court of the king of Persia.