Esther 2:21-23

21In those days, while Mordecai was sitting at the king’s gate, Bigthan and Teresh, two of the king’s eunuchs who guarded the door, became angry and conspired to attack King Ahasuerus.

22But the plot became known to Mordecai, who informed Queen Esther, and Esther told the king in Mordecai’s name.

23Now when the plot was investigated and found to be true, both men were hanged on the gallows. And it was recorded in the Book of the Chronicles in the king’s presence.