Jeremiah 39:5-6

5But the soldiers of Babylon's army chased after them. They caught Zedekiah on the flat land near Jericho. They took him to King Nebuchadnezzar of Babylon at Riblah, in the region called Hamath. King Nebuchadnezzar decided that Zedekiah was guilty.

6He decided how he would punish Zedekiah. He told his soldiers to kill all Zedekiah's sons, while Zedekiah watched. Nebuchadnezzar also punished all the important men of Judah with death.