Libya will suffer a large-scale food crisis within two months unless stocks are replenished and distribution networks are supported, the UN says.

The World Food Programme says current stocks may last only 45 to 60 days after which many people will be forced to cut back on meals.

WFP's regional director for the Middle East and North Africa says rising fuel prices and lack of hard currency are making it hard for Libya to import food.

Daly Belgasmi told reporters in Geneva that Libya's private economy has been hit by the exodus of foreigners who worked in food production such as bakeries.

Belgasmi says government-run distribution networks have also come under pressure due to the conflict.