Jeremiah 52:9-10
52:9 They captured him and brought him up to the king of Babylon at Riblah in the territory of Hamath and he passed sentence on him there.
52:10 The king of Babylon had Zedekiah’s sons put to death while Zedekiah was forced to watch. He also had all the nobles of Judah put to death there at Riblah.