Police say a 28-year-old woman was sexually assaulted while receiving treatment at a Chinatown acupuncture clinic.

The alleged assault occurred at Suiki Health Beauty Acupuncture Centre at 428 Dundas St. W. on Feb. 19, 2012, police say.

Police believe there may be more victims.

They are asking anyone with information to call 416-808-7474 or to call Crime Stoppers at 416-222-8477.

Police have charged Jin Wen Zhou, 41, of Toronto. Police say he also goes by the name Raymond Chow.

Zhou appeared in court on Friday.