1 Kings 11:5-7

He followed Ashtoreth the goddess of the Sidonians, and Molek the detestable god of the Ammonites. So Solomon did evil in the eyes of the LORD; he did not follow the LORD completely, as David his father had done. On a hill east of Jerusalem, Solomon built a high place for Chemosh the detestable god of Moab, and for Molek the detestable god of the Ammonites.