Jeremiah 52:4-6 NIV

4 So in the ninth year of Zedekiah's reign, on the tenth1 day of the tenth month, Nebuchadnezzar king of Babylon marched against Jerusalem2 with his whole army. They camped outside the city and built siege works3 all around it.4

References for Jeremiah 52:4

5 The city was kept under siege until the eleventh year of King Zedekiah.
6 By the ninth day of the fourth month the famine in the city had become so severe that there was no food for the people to eat.5

References for Jeremiah 52:6