The locusts have been seen in Eastern Equatoria state near the borders with Ethiopia, Kenya and Uganda.

At least 10 people were killed in clashes with security forces during mass demonstrations demanding a transition to civilian rule in Sudan, an activist has claimed.

The Sudan Doctors Committee, which is part of the Sudanese Professionals Association that has been spearheading the protests, said the six included an army officer.

Islamists in Sudan long allied with ousted president Omar al-Bashir's regime have called for a rally to support military-backed Islamic rule in the face of alleged attempts by protesters to abolish it.

Six people have died in the capital of Khartoum, the seventh in Darfur, during protests in Sudan..

Sudan's embattled president has banned unauthorised public gatherings and granted sweeping powers to the police after imposing a state of emergency in response to more than two months of protests against his rule.

Across South Sudan, children have been used as soldiers, leading to 3,100 becoming demobilised.

A Cork priest serving on mission in South Sudan has described in chilling detail how a Jesuit friend and colleague was murdered by gunmen in country last week.

At least 22 people have been killed after a boat sank while crossing the Nile River in Sudan.

Ten UN staff and aid workers abducted in South Sudan almost a week ago have been released.

South Sudan’s former military chief of staff Paul Malong has been released from house arrest on humanitarian grounds and flown to Kenya for medical treatment.

An Irishwoman has issued a stark warning about malnutrition in war-torn South Sudan, where she heads up 350 Concern workers.

South Sudan no longer has areas in famine but almost two million people are on the brink of starvation, according to reports by the government and the United Nations.

"The horrifying fact that nearly one in five children in South Sudan has been forced to flee their home illustrates how devastating this conflict has been for the country's most vulnerable."

United Nations secretary-general Antonio Guterres has said the UN needs £3.5 billion by the end of next month to prevent "a catastrophe" of hunger and famine in South Sudan, Nigeria, Somalia and Yemen.

Sudan is hosting South Sudan's former rebel leader and vice president, whose whereabouts had been unknown after he fled his country into neighbouring Congo last week.

The soldier pointed his AK-47 at the aid worker and gave her a choice.