The head of the World Council of Churches is calling upon governments in the Horn of Africa to do everything they can to ensure aid reaches those in need.

The region is facing its worst famine in decades, with the World Food Programme warning that around two million Somalis face starvation.

WCC General Secretary Rev Dr Olav Fykse Tveit said that more people were dying as a result of blocks to food aid.

Al Shabaab rebels are reportedly blocking tons of aid, burning supplies of food and medicine.

"This interference with humanitarian aid is inhumane and must be strongly condemned," said Dr Tveit.

"People of all ages are dying, hour by hour.

"Governments must find workable solutions to the political circumstances that hinder the delivery of water, food and other supplies.

"The famine is a human tragedy that should be addressed immediately, regardless of political struggles in a given nation."

Dr Tveit called upon the international community, including African churches and church aid agencies to "move swiftly" to make aid available.

He also urged Christians to keep all people in the Horn of Africa in their prayers.

"Innocent lives are at stake," he added.