Jeremiah 41:1-2

Young's Literal Translation

41 And it cometh to pass, in the seventh month, come hath Ishmael son of Nethaniah, son of Elishama, of the seed royal, and of the chiefs of the king, and ten men with him, unto Gedaliah son of Ahikam, to Mizpah, and they eat there bread together in Mizpah.

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.