מִפְּנֵי֙ הַכַּשְׂדִּ֔ים כִּ֥י יָרְא֖וּ מִפְּנֵיהֶ֑ם כִּֽי־הִכָּ֞ה יִשְׁמָעֵ֣אל בֶּן־נְתַנְיָ֗ה אֶת־גְּדַלְיָ֙הוּ֙ בֶּן־אֲחִיקָ֔ם אֲשֶׁר־הִפְקִ֥יד מֶֽלֶךְ־בָּבֶ֖ל בָּאָֽרֶץ׃ (ס)
because of the Chaldeans; for they were afraid of them, because Ishmael the son of Nethaniah had slain Gedaliah the son of Ahikam, whom the king of Babylon made governor over the land.
Read halakhic rulings (Jewish law) on Jeremiah 41:18: and classical halakhic sources.