Jeremiah 40:13, 15

Moreover, Johanan the son of Kareah and all the commanders of the forces that were [scattered] in the open country came to Gedaliah at Mizpah

Then Johanan the son of Kareah spoke secretly to Gedaliah in Mizpah, saying, “Let me go and kill Ishmael the son of Nethaniah, and not a man will know [who is responsible]. Why should he kill you and cause all the Jews who are gathered near you to be scattered and the remnant of Judah to perish?”