An executive at Tencent Holdings Ltd has been held by Chinese authorities as part of a probe into a high-profile corruption case involving one of China’s former top law-enforcement officials, the Wall Street Journal (WSJ) reported, citing people familiar with the matter.

Shares in the gaming company and internet powerhouse fell 1.4 percent in early trade in Hong Kong today, while the broader market slipped 0.3 percent.

Tencent did not immediately respond to a request for comment.

Zhang Feng has been under investigation by China’s anti-graft inspector since early last year for alleged unauthorised sharing of personal data collected by Tencent’s social media app WeChat, the WSJ said.

Zhang was suspected of turning over WeChat data to former Vice Public Security Minister Sun Lijun, who is being investigating by Beijing for undisclosed violations of Communist Party rules, the report added.