After the Fall of Mogadishu to the Ethiopian and government forces on December 28, fighting continued in the Juba River valley, where the UIC retreated, establishing a new headquarters in the city of Kismayo. Intense fighting was reported on December 31 in the Battle of Jilib and the ICU frontlines collapsed during the night to artillery fire, causing the ICU to once again go into retreat, abandoning Kismayo, without a fight and retreating towards the Kenyan border.[73]