Jeremiah 41:1-3

But in the seventh month, Ishmael son of Nethaniah, son of Elishama, came. He had royal blood in his veins and had been one of the king’s high-ranking officers. He paid a visit to Gedaliah son of Ahikam at Mizpah with ten of his men. As they were eating together, Ishmael and his ten men jumped to their feet and knocked Gedaliah down and killed him, killed the man the king of Babylon had appointed governor of the land. Ishmael also killed all the Judeans who were with Gedaliah in Mizpah, as well as the Chaldean soldiers who were stationed there.