NAIROBI, Kenya - The UN and aid agencies are warning that the famine in Somalia will grow in size and severity unless the world community responds with more aid.

Oxfam said Tuesday that Somalia famine crisis is "spiraling out of control" and that donations are failing to keep pace with the level of need.

The UN's humanitarian aid office warned that unless it sees a massive increase in donations, the famine will spread to five or six more regions inside Somalia. Currently two regions of Somalia are classified as famine zones.

The UN says another $1.4 billion is needed. More than 12 million people in Kenya, Ethiopia, Somalia and Djibouti need food aid.