Rhino horn stock piles worth over $5.2 million have been stolen from a South African game park office, the raided tourist agency said on Tuesday, in the first known theft of its kind. Thieves on Monday broke into the Mpumalanga Tourism and Parks Agency and cut into a strong box, making off with 112 pieces of rhino horn, weighing 80,135 kilograms. "It's the first time there has been a break in at our premises, it was obviously well planned," the parks' spokeswoman Kholofelo Nkambule said. Poaching rhinos for their horns is a growing problem in South Africa and a lucrative business for organised criminal networks but it is unusual for thieves to target stock piles.

By Carl Odera and Michelle Nichols NAIROBI/UNITED NATIONS (Reuters) - South Sudan peace talks were delayed again on Tuesday as United Nations peacekeepers battle to protect some 22,000 civilians at a base in Bentiu, where dead bodies lined the dusty streets after an ethnic massacre during rebels' seizure of the oil town. The U.N. base, guarded by 500 peacekeepers, has come under rocket fire and the number of civilians seeking refuge there has quadrupled since the start of April, U.N. spokesman Stephane Dujarric told reporters in New York. The United Nations accused the rebels of hunting down men, women and children a week ago in a hospital, church and mosque in the capital of the oil-producing Unity state and then killing them based on ethnicity and nationality. He also accused the U.N. mission of "cheap propaganda" to win favor with South Sudanese President Salva Kiir.