1 Kings 16:9-12

9And his servant Zimri, captain of half [his] chariots, conspired against him; and he was in Tirzah, drinking himself drunk in the house of Arza, who was the steward of his house in Tirzah;

10and Zimri went in and smote him, and killed him, in the twenty-seventh year of Asa king of Judah, and he reigned in his stead.

11And it came to pass when he began to reign, as soon as he sat on his throne, he slew all the house of Baasha: he left him not a male, neither of his kinsmen nor of his friends.

12And Zimri destroyed all the house of Baasha, according to the word of Jehovah, which he spoke against Baasha through Jehu the prophet,