Fighters loyal to veteran military commander Khalifa Haftar have entered the eastern city of Derna.

The city has been held by an al-Qaeda linked group, but the self-styled Libyan National Army has besieged it for two years.

The UN says fighting has reached unprecedented levels, and there are severe shortages of basic supplies.

Al Jazeera's Mahmoud Abdelwahed reports from Tripoli.

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