Esther 3:1, 5-6

After these events King Ahasuerus promoted Haman, the son of Hammedatha the Agagite, and advanced him and established his authority over all the princes who were with him.

When Haman saw that Mordecai neither bowed down nor paid homage to him, Haman was filled with rage. But he disdained to lay hands on Mordecai alone, for they had told him who the people of Mordecai were; therefore Haman sought to destroy all the Jews, the people of Mordecai, who were throughout the whole kingdom of Ahasuerus.