Western powers appear to have tightened their grip on Libyan airspace following the latest wave of air strikes.
The on-going bombardment comes as more forces arrive to take part in operation Odyssey Dawn. The US, France and UK remain the principle participants among the allies, with Canada, Italy and Spain also contributing forces.
Norway is also taking part in the operation, with Denmark, Belgium, the United Arab Emirates and Qatar also sending military hardware, notably fighter jets.
The contribution from the two Middle Eastern states is seen as vital with concern growing in the region over the heavy nature of the bombardment.
The head of the Arab League, Amr Moussa, who supported the UN mandated intervention, criticised its severity saying the air attacks had killed many civilians.