2 Kings 25:25-26

25But in the seventh month of that year, Ishmael went to Mizpah with ten of his men. Ishmael was the son of Nethaniah and the grandson of Elishama, who belonged to the king's family. They murdered Gedaliah, and the other men who were with him in Mizpah. Some of those men were from Judah and some of them were from Babylon.

26When that happened, all the people of Judah ran away to Egypt. They included the army officers, as well as ordinary people and important people. They were all afraid that the people of Babylon would come to punish them.