
Islamist insurgents who control large parts of southern Somalia have told the UN's World Food Programme (WFP) to stop importing goods into the country.
The al-Shabab group issued a statement saying the WFP must start buying from Somali farmers, saying mass importing had devastated local agriculture.
Analysts say al-Shabab is hoping to boost its support in farming areas.
Drought and war has left more than 109,000 young children dependent on the feeding centres run by the WFP.
The UN estimates half of the people living in central and southern Somalia - areas largely controlled by Islamist militants - are now in need of food aid.
Al-Shabab, which the US believes has links to al-Qaeda, controls large swathes of southern Somalia where they have imposed a strict interpretation of Islamic law which has been unpopular with many Somalis.
The BBC's Mohammed Olad Hassan, in the capital Mogadishu, says the WFP is a major player in the international response to the humanitarian emergency.
But the WFP itself has come under attack several times from insurgents - its food trucks, warehouses and ships have all been raided.
And the programme has also been forced to shut feeding centres because of a lack of funding which has been blamed on strict US sanctions.
A statement from al-Shabab said the WFP must empty all of its storage warehouses by the end of the year, and warned local businesses they must end contracts with the WFP.
"The bringing of immense quantities of free food rations, and specifically during the harvest season, has been devastating to the agriculture industry in Somalia," the statement said.
"It has been decided that the WFP must immediately refrain from bringing food rations from outside of Somalia and rather purchase food from Somali farmers, and then that food will be distributed to the needy in Somalia."
At a recent conference in Italy the prime minister in Somalia's weak UN-backed government, Omar Abdirashid Ali Sharmarke, mentioned the need to empower the country's farmers.
He called for more funding from the UN and developed nations to buy seeds and fertiliser.
Somalia has been in turmoil since 1991 when its central government collapsed.
The transitional government, helped by an African Union peacekeeping force, runs only parts of Mogadishu.


BoG's $260 million building: It was Ato Forson who first proposed 'sell-and-leas...
'We have to do soul-searching' — Mahama orders nationwide flood assessment
Court orders woman beater to pay GHS5,000 compensation to midwife at Tema Commun...
Over 12,000 women living with obstetric fistula in Ghana — Asokwa MP
Mahama secures 1,840 farm equipment deal from Belarus
Titus Glover slams Mahama’s flood report directive, calls it “waste of energy an...
We have increased posting of doctors from 12 to 100 to underserved regions in 20...
'You had the effrontery to call me struggling lawyer, you won't come back to pow...
Belarus manufacturers to storm Ghana next week after President's visit
Government to offer tax incentives for factories located outside Accra
