Jeremiah 41:2-4

Young's Literal Translation

² And Ishmael son of Nethaniah riseth, and the ten men who have been with him, and they smite Gedaliah son of Ahikam, son of Shaphan, with the sword, and he putteth him to death whom the king of Babylon hath appointed over the land.

³ And all the Jews who have been with him, with Gedaliah, in Mizpah, and the Chaldeans who have been found there -- the men of war -- hath Ishmael smitten.

⁴ And it cometh to pass, on the second day of the putting of Gedaliah to death, (and no one hath known,)