* Uganda to send 2,000 more peacekeeping troops - AMISOM
* Government and peacekeepers do not control all of capital
* Amos calls for improved security for food convoys
* Rebel arms cache seized by Somali police and peacekeepers (Adds state of emergency in parts of capital, paragraphs 10-11)
By Ibrahim Mohamed
MOGADISHU, Aug 13 (Reuters) - Somalia called on Saturday for the creation of a new force to protect food aid convoys and camps in the famine-hit country, and declared a state of emergency in parts of Mogadishu.
Islamist rebels mostly retreated from the capital last weekend but the threat of guerrilla-style attacks such as suicide bombings remains despite their battlefield defeat.
The government and a 9,000-strong African peacekeeping force admit they do not control all of the capital even after the rebel withdrawal, placing thousands of Somali refugees who are streaming into Mogadishu searching for food in danger.
The pullout by the al Qaeda-affiliated al Shabaab insurgents has raised hopes humanitarian groups will be able to step up aid deliveries after years of obstruction by the militants.
Somali Prime Minister Abdiweli Mohamed Ali held a joint news conference with Valerie Amos, U.N. emergency relief coordinator.
“We met today with Valerie Amos ... we have discussed the current humanitarian situation in Somalia and the best way that we can assist with humanitarian aid to the people,” Ali said.
“We have also raised the issue of creating a special humanitarian force, which has dual purposes. First to secure and protect the food aid convoy, and to protect the camps and stabilise the city and fight banditry and looting.”
Ali did not say who would make up such a force.
This month, government troops fired shots and fought among themselves as some looted food meant for famine victims provided by the World Food Programme at the Badbaado camp near the city.
Following the meeting between Ali and Amos, Somali President Sheikh Sharif Ahmed issued a decree declaring a state of emergency in areas abandoned by the rebels in Mogadishu.
It bans clan militias from the areas and gives the military court jurisdiction to deal with crimes committed there.
Amos called for improved security for food convoys, and said she was shocked at the conditions after touring a hospital and meeting Somalis who had walked long distances to find food.
“The prime minister and I discussed the importance of security to ensure that humanitarian operations can continue... I am confident that with an improvement of security we will be able to do more to help those people who are desperately in need,” she said.
“I was shocked to see some of the children at the hospital that I visited, and I can’t imagine what it feels like to be a parent of these children suffering that level of malnutrition.”
A cholera epidemic is spreading in the country, especially among people driven to the capital by a lack of food and water.
About 3.6 million people in Somalia are at risk of starvation. Some 12.4 million people in the Horn of Africa — including Somalia, Kenya, Ethiopia and Djibouti — are affected by the worst drought in decades, according to the United Nations. Tens of thousands of people have already died.
Lieutenant Colonel Paddy Ankunda, spokesman for the AMISOM peacekeeping force that backs Ahmed’s beleaguered government, told Reuters Uganda would soon send 2,000 more soldiers.
Ankunda said AMISOM has been waiting for the deployment of 3,000 more troops promised since June. Uganda has said it will send more if other nations pay for them.
The United Nations has authorised a total of 12,000 troops for now.
“The Ugandan president made the pledge and 2,000 Ugandan troops will come as soon as logistics allow,” Ankunda said.
“This is part of the long awaited deployment of 3,000 troops. I do not know any other country that is sending troops at the moment so far.”
Somali police and the African Union troops said they had discovered 137 artillery shells in a disused house in the capital and destroyed them.
“The extremists were storing up large stocks of munitions in order to make improvised bombs to launch a campaign of terror in Mogadishu,” Ankunda said in a statement.
“Large areas of the city have to be cleared of these types of weapons stores and secured in the longer term so that the city can return to some semblance of normality and to do this we need more troops.” (Additonal reporting by Mohamed Ahmed and Abdi Sheikh; writing by James Macharia; editing by Andrew Roche)