2 Maccabees 10:13

13 As a result the King's Friends went to Eupator and accused Macron of treachery, because he had abandoned the island of Cyprus, which King Philometor of Egypt had placed under his command, and had gone over to Antiochus Epiphanes. In fact, everyone called Macron a traitor. No longer able to maintain the respect that his office demanded, he committed suicide by taking poison.