Fighters in the western mountain town of Zintan have refused to give up Saif al-Islam, the most prominent son of slain ruler Muammar Gaddafi, saying his secrets are too important to risk.
On Friday, Zintanis detained an International Criminal Court lawyer and an interpreter visiting Saif al-Islam for allegedly trying to deliver letters to him. They say the letters, which she hid in her clothing, posed a danger to Libya's national security.
Zintan's leaders say their people sacrificed many lives for the revolution that ended Gaddafi's rule, and that Saif al-Islam has information that could implicate Libya's interim leaders and foreign countries in wrong doing.
Al Jazeera's Omar al-Saleh reports from Zintan.