1 Kings 16:9-10

Then Zimri, who commanded half of the royal chariots, made plans to kill him. One day in Tirzah, Elah was getting drunk at the home of Arza, the supervisor of the palace. Zimri walked in and struck him down and killed him. This happened in the twenty-seventh year of King Asa’s reign in Judah. Then Zimri became the next king.