1 Kings 16:19-23

because of his sins which he committed, doing evil in the sight of the Lord, walking in the way of Jeroboam, and in his sin which he committed, misleading Israel into sin.

Now as for the rest of the acts of Zimri and his conspiracy which he carried out, are they not written in the Book of the Chronicles of the Kings of Israel?

Then the people of Israel were divided into two parts: half of the people followed Tibni the son of Ginath, to make him king; the other half followed Omri.

But the people who followed Omri prevailed over the people who followed Tibni the son of Ginath. And Tibni died and Omri became king.

In the thirty-first year of Asa king of Judah, Omri became king over Israel and reigned for twelve years; he reigned for six years at Tirzah.