Abimelech and his men fought against the city of Shechem all that day. They captured the city of Shechem and killed its people. Then Abimelech tore down the city and threw salt over the ruins.
Omri was the commander of the army of Israel. The men in the camp heard that Zimri had made secret plans against the king and killed him. So in the camp all the soldiers made Omri the new king.