2 Kings 25:25-26
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.
25:26 Then all the people, from the youngest to the oldest, as well as the army officers, left for Egypt, because they were afraid of what the Babylonians might do.