Seleucus IV Philopator in Wikipedia

Seleucus IV Philopator (Greek: Σέλευκος Δ' Φιλοπάτωρ), ruler of the Hellenistic Seleucid Empire, reigned from 187 BC to 175 BC over a realm consisting of Syria (now including Cilicia and Judea), Mesopotamia, Babylonia and Nearer Iran (Media and Persia). He was the second son and successor of Antiochus III the Great and Laodice III. The wife of Seleucus IV was his sister Laodice IV, by whom he had three children: two sons Antiochus, Demetrius I Soter and a daughter Laodice V. He was compelled by financial necessities, created in part by the heavy war-indemnity exacted by Rome, to pursue an ambitious policy. In an effort to collect money to pay the Romans, he sent his minister Heliodorus to Jerusalem to seize the temple treasury. On his return, Heliodorus assassinated Seleucus, and seized the throne for himself. The true heir Demetrius, son of Seleucus, was now being retained in Rome as a hostage, and the kingdom was seized by the younger brother of Seleucus, Antiochus IV Epiphanes. Antiochus managed to oust Heliodorus and an infant son of Seleucus, also named Antiochus, was formal head of state for a few years until Epiphanes had him murdered.