Then King Nebuchadnezzar appointed Gedaliah son of Ahikam and grandson of Shaphan as governor over the people left in Judah.
When all the army commanders and their men learned that the king of Babylon had appointed Gedaliah as governor, they joined him at Mizpah. These included Ishmael son of Nethaniah, Johanan son of Kareah, Seraiah son of Tanhumeth the Netophathite, and Jaazaniah son of the Maacathite, and all their men.
Gedaliah vowed to them that the Babylonian officials meant them no harm. "Live in the land and serve the king of Babylon, and all will go well for you," he promised.
But in midautumn of that year, Ishmael son of Nethaniah and grandson of Elishama, who was of the royal family, went to Mizpah with ten men and assassinated Gedaliah and everyone with him, both Judeans and Babylonians.
References for 2 Kings 25:25
Then all the people of Judah, from the least to the greatest, as well as the army commanders, fled in panic to Egypt, for they were afraid of what the Babylonians would do to them.