2 Chronicles 33:21-25 NIV

[21] Amon was twenty-two years old when he became king, and he reigned in Jerusalem two years. [22] He did evil in the eyes of the LORD, as his father Manasseh had done. Amon worshiped and offered sacrifices to all the idols Manasseh had made. [23] But unlike his father Manasseh, he did not humble himself before the LORD; Amon increased his guilt. [24] Amon’s officials conspired against him and assassinated him in his palace. [25] Then the people of the land killed all who had plotted against King Amon, and they made Josiah his son king in his place.