"An armed group exchanged fire with police. Five Chinese nationals were kidnapped," Major Dieudonne Kasereka, the army spokesman in the region, said.
A spokesperson at the Chinese embassy in Congo did not respond to a request for comment. The name of the mine site was not given. In August, the governor of South Kivu, Theo Kasi, suspended the operations of six small Chinese companies, ordering all local and foreign staff to leave the sites. Protests erupted in some areas after companies did not close immediately, local media reported.