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,
1 Kings 16:18
Surrounding context
16:17 Then Omri and all Israel with him went up from Gibbethon, and they besieged Tirzah.
16:18 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,
16:19 because of the sins which he had committed in doing evil in the sight of the LORD, in walking in the way of Jeroboam, and in his sin which he had committed to make Israel sin.