Esther 2:19-23 NKJV
When virgins were gathered together a second time, Mordecai sat within the king’s gate. Now Esther had not revealed her family and her people, just as Mordecai had charged her, for Esther obeyed the command of Mordecai as when she was brought up by him.
In those days, while Mordecai sat within the king’s gate, two of the king’s eunuchs, Bigthan and Teresh, doorkeepers, became furious and sought to lay hands on King Ahasuerus. So the matter became known to Mordecai, who told Queen Esther, and Esther informed the king in Mordecai’s name. And when an inquiry was made into the matter, it was confirmed, and both were hanged on a gallows; and it was written in the book of the chronicles in the presence of the king.
NKJV: New King James Version