Jeremiah 41:2, 10

Ishmael the son of Nethaniah and the ten men who were with him arose and struck down Gedaliah the son of Ahikam, the son of Shaphan, with the sword and put to death the one whom the king of Babylon had appointed over the land.

Then Ishmael took captive all the remnant of the people who were in Mizpah, the king’s daughters and all the people who were left in Mizpah, whom Nebuzaradan the captain of the bodyguard had put under the charge of Gedaliah the son of Ahikam; thus Ishmael the son of Nethaniah took them captive and proceeded to cross over to the sons of Ammon.