A former boss of one the three largest state-owned telephone carriers in China is being investigated by the Chinese anti-corruption Agency.

Li Guohua was formerly the general manager of China Unicom. The Central Commission for Discipline Inspection stated in a one sentence statement Friday that Li Guohua is being investigated for “severe violations” of law and discipline.

The agency did not provide any details. In a long-running crackdown against embezzlement, taking of bribes, and other criminal behavior, thousands of Chinese officials and executives have been implicated.

China Unicom (or China United Network Communications Group Co. Ltd.) is one of the largest mobile phone carriers in the world. It also provides fixed-line internet services and digital TV services. On revenue of 164.2 million yuan ($26billion), it reported 9.2 billion Yuan ($1.45 Billion) in profit for 2021’s first half.