Jeremiah 41:2-7

2And Ishmael the son of Nethaniah arose, and the ten men that were with him, and smote Gedaliah the son of Ahikam the son of Shaphan with the sword, and killed him, whom the king of Babylon had appointed over the land.

3And Ishmael smote all the Jews that were with him, with Gedaliah, at Mizpah, and the Chaldeans that were found there, the men of war.

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

5that there came men from Shechem, from Shiloh, and from Samaria, eighty men, having their beards shaven and their clothes rent, and having cut themselves; with oblations and incense in their hand, to bring them to the house of Jehovah.

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

7And it was so, when they came into the midst of the city, that Ishmael the son of Nethaniah, he and the men that were with him, slew them, [and cast them] into the midst of the pit.