China yesterday lodged a formal protest with Sudan over the capture of 29 Chinese workers by rebels. Vice-foreign minister Xie Hangsheng has summoned a top level Sudanese embassy diplomat over the abduction of the workers in South Kordofan state. The workers were captured by the Sudan People's Liberation Movement Northern Branch. The SPLM-N says they took them for their own safety, a key figure within the SPLM-N rebel movement tells RFI.