There has been heavy fighting in Mogadishu, the capital of Somalia.
At least 45 people were killed and 200 wounded on Friday in clashes between Islamist fighters and pro-government forces who are attempting to recapture areas seized by the rebels.
Supporters of the government lost control of about a third of the city last week.
There has been civil war in Somalia for 18 years.
At least 17,700 civilians have been killed and more than 1 million driven from their homes since 2007. About 3 million Somalis survive on emergency food aid.
The United Nations refugee agency UNHCR says 49,000 people have fled fighting in Mogadishu in the past two weeks.