MOUNT VERNON — An undercover investigation into activities at a Mt. Vernon spa and massage parlor led police to arrest a 57-year-old woman Tuesday for alleged prostitution.

Quiju Zhang is free on bond. She was arrested after the Mt Vernon Police Department conducted an investigation of the Yin Yin Spa Massage parlor located at 4112 Broadway in Mt. Vernon.

The investigation was based upon information received from the public. A search warrant was ultimately issued by the Honorable Judge Crisel with the assistance of Jefferson County State’s Attorney Featherstun for the business and additional evidence was seized.

Detectives from the police department, with the assistance of the patrol division, conducted an undercover operation, which lead to Zhang’s arrest on the charge of prostitution.