2 Kings 25:25-26

25 aBut in the seventh month, bIshmael the son of Nethaniah, son of Elishama, of the royal family, came with ten men and struck down Gedaliah and put him to death along with the Jews and the Chaldeans who were with him at Mizpah. 26 cThen all the people, both small and great, and the captains of the forces arose and went to Egypt, for they were afraid of the Chaldeans.

Jeremiah 41:3

3Ishmael also struck down all the Judeans who were with Gedaliah at dMizpah, and the Chaldean soldiers who happened to be there.

Copyright information for ESV