2 Kings 25:23, 25

When all the army commanders and their men learned that the king of Babylon had appointed Gedaliah as governor, they went to see him at Mizpah. These included Ishmael son of Nethaniah, Johanan son of Kareah, Seraiah son of Tanhumeth the Netophathite, Jezaniah son of the Maacathite, and all their men.

But in midautumn of that year, Ishmael son of Nethaniah and grandson of Elishama, who was a member of the royal family, went to Mizpah with ten men and killed Gedaliah. He also killed all the Judeans and Babylonians who were with him at Mizpah.