China's Africa resource hunt lacks transparency: World Bank

Ngozi Okonjo-Iweala, the World Bank's managing director, told Reuters on the sidelines of one of China's biggest mining conferences that investors in Africa needed to work more with local communities in order to avoid conflicts and eventually even reduce costs.

"China's investment is welcome -- Africa has an investment deficit and there is room for everyone, but investment needs to have sound principles whether it is from China, Europe or the United States," she said.