A team of wildlife conservationists has flown to Sudan to look after four starving lions in a zoo in the capital Khartoum.

The animals went hungry during the months of political and economic turmoil last year.

They lost as much as two-thirds of their body weight.

A lioness at the zoo died from dehydration last week, despite receiving intravenous fluids.

The conservationists say their first priority is to provide food and medical care for the lions. They will then look for a long-term solution.