Jeremiah 41:2-4

Amplified Bible

² Ishmael the son of Nethaniah and the ten men who were with him got up and struck down Gedaliah the son of Ahikam, the son of Shaphan, with the sword and killed the one whom the king of Babylon had appointed [governor] over the land.^{(A) 3} Ishmael also killed all the Jews who were [at the banquet] with Gedaliah at Mizpah, in addition to the Chaldean soldiers who were there.

⁴ Now it happened on the second day after the killing of Gedaliah, before anyone knew about it,