2 Maccabees 10:13

Whereupon being accused of the king’s friends before Eupator, and called traitor at every word because he had left Cyprus, that Philometor had committed unto him, and departed to Antiochus Epiphanes, and seeing that he was in no honourable place, he was so discouraged, that he poisoned himself and died.

Background and history of 2 Maccabees, and issues with this book.