1 Kings 16:9-11

New Revised Standard Version, Anglicised Catholic Edition

⁹ But his servant Zimri, commander of half his chariots, conspired against him. When he was at Tirzah, drinking himself drunk in the house of Arza, who was in charge of the palace at Tirzah, ¹⁰ Zimri came in and struck him down and killed him, in the twenty-seventh year of King Asa of Judah, and succeeded him.

¹¹ When he began to reign, as soon as he had seated himself on his throne, he killed all the house of Baasha; he did not leave him a single male of his kindred or his friends.