Jeremiah 41:6

3 Ishmael also slew all the Jews that were with him, [even] with Gedaliah, at Mizpah, and the Chaldeans that were found there, [and] the men of war.

4 And it came to pass the second day after he had slain Gedaliah, and no man knew [it],

5 That there came certain from Shechem, from Shiloh, and from Samaria, [even] fourscore men, having their beards shaven, and their clothes rent, and having cut themselves, with offerings and incense in their hand, to bring [them] to the house of the LORD.

6 And Ishmael the son of Nethaniah went forth from Mizpah to meet them, weeping all along as he went: and it came to pass, as he met them, he said unto them, Come to Gedaliah the son of Ahikam.

7 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.

8 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.

9 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.