I Kings 16:9-11, 18, 22

Now his servant Zimri, commander of half his chariots, conspired against him as he was in Tirzah drinking himself drunk in the house of Arza, steward of his house in Tirzah. And Zimri went in and struck him and killed him in the twenty-seventh year of Asa king of Judah, and reigned in his place. Then it came to pass, when he began to reign, as soon as he was seated on his throne, that he killed all the household of Baasha; he did not leave him one male, neither of his relatives nor of his friends.

And it happened, when Zimri saw that the city was taken, that he went into the citadel of the king’s house and burned the king’s house down upon himself with fire, and died

But the people who followed Omri prevailed over the people who followed Tibni the son of Ginath. So Tibni died and Omri reigned.