2 Chronicles 33:21-25 New King James Version (NKJV)
Amon’s Reign and Death
21 Amon was twenty-two years old when he became king, and he reigned two years in Jerusalem. 22 But he did evil in the sight of the Lord, as his father Manasseh had done; for Amon sacrificed to all the carved images which his father Manasseh had made, and served them. 23 And he did not humble himself before the Lord, as his father Manasseh had humbled himself; but Amon trespassed more and more.
24 Then his servants conspired against him, and killed him in his own house. 25 But the people of the land executed all those who had conspired against King Amon. Then the people of the land made his son Josiah king in his place.