Jeremiah 41:9 (KJV)

And it was so, when they came into the midst of the city, that Ishmael the son of Nethaniah slew them, and cast them into the midst of the pit, he, and the men that were with him.

But ten men were found among them that said unto Ishmael, Slay us not: for we have treasures in the field, of wheat, and of barley, and of oil, and of honey. So he forbare, and slew them not among their brethren.

Now the pit wherein Ishmael had cast all the dead bodies of the men, whom he had slain because of Gedaliah, was it which Asa the king had made for fear of Baasha king of Israel: and Ishmael the son of Nethaniah filled it with them that were slain.

Then Ishmael carried away captive all the residue of the people that were in Mizpah, even the king’s daughters, and all the people that remained in Mizpah, whom Nebuzar–adan the captain of the guard had committed to Gedaliah the son of Ahikam: and Ishmael the son of Nethaniah carried them away captive, and departed to go over to the Ammonites.

But when Johanan the son of Kareah, and all the captains of the forces that were with him, heard of all the evil that Ishmael the son of Nethaniah had done,