1 Kings 16:9-13

9His servant Zimri, commander of half his chariots, conspired against him while Elah was in Tirzah getting drunk in the house of Arza, who was in charge of the household at Tirzah.

10In the twenty-seventh year of Judah’s King Asa, Zimri went in and struck Elah down, killing him. Then Zimri became king in his place.

11When he became king, as soon as he was seated on his throne, Zimri struck down the entire house of Baasha. He did not leave a single male, including his kinsmen and his friends.

12So Zimri destroyed the entire house of Baasha, according to the word of the Lord he had spoken against Baasha through the prophet Jehu.

13This happened because of all the sins of Baasha and those of his son Elah, which they committed and caused Israel to commit, angering the Lord God of Israel with their worthless idols.