Australian Open organizers said the safety of Peng Shuai remains their "primary concern" even as security officials at the Grand Slam forced fans to remove shirts referring to the Chinese former doubles No. 1.

A video posted on social media on Saturday showed security staff at Melbourne Park confiscating shirts and a banner bearing the slogan: "Where Is Peng Shuai?"

Peng's well-being became a matter of concern among the global tennis community in November when she appeared to allege that a former Chinese vice premier, Zhang Gaoli, had sexually assaulted her in the past. After that post, she was absent from public view for nearly three weeks.