I read Jeremiah 41:
“Ishmael son of Nethaniah and the ten men who were with him got up and struck down Gedaliah son of Ahikam, the son of Shaphan, with the sword, killing the one whom the king of Babylon had appointed as governor over the land.”
-Jeremiah 41:2 (NIV)
(4 minutes & 11 seconds of archived audio)