Fighting is ongoing in the centre of the Libyan city of Az-Zawiyah and around its oil refinery.<br /><br />Hundreds of opposition fighters entered the city, which is just 50kms west of the capital Tripoli. <br /><br />Controlling the Az-Zawiyah would cut off Libyan leader Muammar Gaddafi's only remaining supply routes from Tunisia. <br /><br />The government, however, says it still has control of the city, and there are reports of heavy fighting there.<br /><br />Find out more about the main roads and supply routes in Libya as fighting continues.
