No fly zone cancelled in Libya?

As Mustafa flew yesterday into Tripoli, was this a one off authorized flight or has the NFZ been opened quietly?

Meanwhile, in Tripoli, Libya’s interim leader and head of the National Transition Council Mustafa Abdel Jalil returned to the capital for the first time since the fall of Gadhafi’s regime. Abdel Jalil was formerly Gadhafi’s minister of justice before defecting to join the rebels in February.