This information was revealed in a company-wide letter seen by Reuters.

The company, which is managed by Hong Kong-registered Shomka Resources, informed employees of an immediate work stoppage in the letter dated May 8.

"Following directives from the new administration in place in South Kivu Province, Twangiza Mining is obliged to suspend its activities," the letter signed by General Director Chao Xianfeng said, adding that equipment and vehicles were being placed on standby mode.

The decision highlights tensions over resource control in DRC's mineral-rich eastern regions, where M23 rebel advances have placed strategic mining assets under new administration, creating uncertainty for international operators and commodity markets. The Rwanda-backed rebels seized control of DRC's two mineral-rich eastern provinces earlier this year, and are solidifying their control over the captured territories.

Manu Birato, who was recently installed as M23 governor of the South Kivu Province, said Twangiza Mining must adapt to new regulations and pay taxes they have not been paying. "We are in talks with them and showing them that from now on they must start paying taxes," Birato told Reuters.
"The country had received absolutely nothing in taxes from this company. The money went into private coffers," he said, adding that the administration had not ordered the shutdown of operations.

"We told them they had to start paying taxes. They are having a hard time adjusting to this new requirement, given that they were used to paying nothing," Birato said. A Spokesperson for Twangiza declined to comment on Birato's assertions. Twangiza Mining is a joint venture between Congolese-owned Shomka Capital with a 65.5% stake, and Chinese Baiyin International Investments Ltd, which holds a 34.5% share.