Muammar Gaddafi is thought to be hiding near the town of Ghadamis near Libya's border with Algeria, a senior Libyan military official told the Reuters news agency.
Hisham Buhagiar, who is part of Libya's new leadership and coordinator of the hunt for Gaddafi, told Reuters that the deposed Libyan leader was believed to have been in the southern town of Samnu last week before traveling to Ghadamis.
"One tribe, the Touareg, is still supporting him and he is believed to be in the Ghadamis area in the south," Buhagiar told Reuters.
He said Gaddafi's son Saif al-Islam was in Bani Walid and another son, Mutassem, was in Sirte, the family's hometown and the site of a continuing intense battle for control between rebels and Gaddafi loyalists.
Buhagiar told Reuters that Gaddafi's sons may yet decide to flee Libya for Niger.
International officials and aid agencies have expressed fears for the more than 200,000 civilians caught up in heavy fighting in Sirte and Bani Walid, the BBC reports.
From GlobalPost in Libya: Why they fight for Muammar Gaddafi
Without federal support, local stations, especially in rural and underserved areas, face deep cuts or even closure. Vital public service alerts, news, storytelling, and programming like The World will be impacted. The World has weathered many storms, and we remain steadfast in our commitment to being your trusted source for human-centered international news, shared with integrity and care. We believe public media is about truth and access for all. As an independent, nonprofit newsroom, we aren’t controlled by billionaire owners or corporations. We are sustained by listeners like you.
Now more than ever, we need your help to support our global reporting work and power the future of The World.