Chris Stephen, The Observer

No one paid much attention to the 21,000-tonne oil tanker Morning Glory as it churned back and forth along the north African coast earlier this month. Tankers are a common sight, carrying Libya's oil exports around the world. But on 1 March it switched off its satellite transponder and vanished from world shipping maps.

Diplomats are warning of growing Islamist violence against western targets in Libya as blowback from the war in Mali, following last week'sattack on the French embassy in Tripoli.

Colonel Farag al-Dersi played key role in curbing militia power in wake of US ambassador Chris Stevens' murder in September

Muammar Gaddafi's eldest son is due to be taken to a prison within a prison in the suburbs of Tripoli to await trial.