South Sudan town of Bor seized by rebels
The army in South Sudan says rebel forces allied to the former vice-president Riek Machar have seized control of the key town of Bor.
The unrest, which began in the capital Juba, has already killed 500 people and sparked fears of a civil war.
President Salva Kiir has accused Mr Machar of staging a coup - a claim he denies.
Thousands of people are seeking refuge from the fighting in UN compounds.
The BBC's Africa security correspondent, Moses Rono is following the story in neighbouring Kenya.
19 Dec 2013