Kings IV 10:9

9 And the morning came, and he went forth, and stood, and said to all the people, Ye are righteous: behold, I conspired against my master, and slew him: but who slew all these?

Kings IV 10:9 In-Context

7 And it came to pass, when the letter came to them, that they took the king's sons, and slew them, seventy men, and put their heads in baskets, and sent them to him at Jezrael.
8 And a messenger came and told , saying, They have brought the heads of the king's sons. And he said, Lay them two heaps by the door of the gate until the morning.
9 And the morning came, and he went forth, and stood, and said to all the people, Ye are righteous: behold, I conspired against my master, and slew him: but who slew all these?
10 See now that there shall not fall to the ground anything of the word of the Lord which the Lord spoke against the house of Achaab: for the Lord has performed all that he spoke of by the hand of his servant Eliu.
11 And Ju smote all that were left of the house of Achaab in Jezrael, and all his great men, and his acquaintance, and his priests, so as not to leave him remnant.

The Brenton translation of the Septuagint is in the public domain.