2 Kings 25:25

25:25 But in the seventh month Ishmael son of Nethaniah, son of Elishama, who was a member of the royal family, came with ten of his men and murdered Gedaliah, as well as the Judeans and Babylonians who were with him at Mizpah.

Jeremiah 39:14

39:14 sent and had Jeremiah brought from the courtyard of the guardhouse. They turned him over to Gedaliah, the son of Ahikam and the grandson of Shaphan, to take him home with him. But Jeremiah stayed among the people.

Jeremiah 41:2

41:2 Ishmael son of Nethaniah and the ten men who were with him stood up, pulled out their swords, and killed Gedaliah, the son of Ahikam and grandson of Shaphan. Thus Ishmael killed the man that the king of Babylon had appointed to govern the country.