In the strongest public stand against China taken by a sports body, the head of the women's professional tennis tour announced Wednesday that all WTA tournaments there would be suspended because of concerns about the safety of Peng Shuai, a Grand Slam doubles champion who accused a former government official of sexual assault.

Peng dropped out of public view after raising the allegations about former vice premier Zhang Gaoli in a Nov. 2 social media posting that was quickly taken down by Chinese authorities.

"Unfortunately, the leadership in China has not addressed this very serious issue in a...