Jewish Publication Society of America Version (JPS1917) - 1 Kings 16:18 >

And it came to pass, when Zimri saw that the city was taken, that he went into the castle of the king's house, and burnt the king's house over him with fire, and died;

King James Version (KJV) - 1 Kings 16:18 >

And it came to pass, when Zimri saw that the city was taken, that he went into the palace of the king’s house, and burnt the king’s house over him with fire, and died,

Berean Study Bible (BSB) - 1 Kings 16:18 >

When Zimri saw that the city was captured, he entered the citadel of the royal palace and burned it down upon himself. So he died