Zimri ruled in Tirzah for seven days. It was in the 27th year that Asa was king of Judah. The army of Israel had set up camp near Gibbethon. It was a Philistine town.
Baasha was from the tribe of Issachar. He was the son of Ahijah. Baasha made plans against Nadab and struck him down at Gibbethon. It was a Philistine town. Baasha struck him down while Nadab and all the men of Israel were getting ready to attack Gibbethon.
The Israelites in the camp heard that Zimri had made plans against King Elah. They also heard that Zimri had murdered him. So they announced that Omri was king over Israel. He was the commander of the army. They made him king that day in the camp.