TULSA, Oklahoma - Tulsa Police arrested the manager of a massage parlor for human trafficking after a masseuse offered sex acts to an undercover officer.

Tulsa Police said an undercover officer went to A1 Massage in the 8000 block of South Memorial Wednesday night after making an appointment.

Police said the masseuse gave the undercover officer a massage then offered sex acts for another $100.

Detectives questioned the masseuse who told police she was promised a job if she came to America. Once she came to the country, officers said the manager of the salon, Haolin Yang, taught the masseuse how to give sexual massages and forced her to work 13 hours every day.

The woman also lived with Yang, who was arrested on human trafficking complaints.

Officer Jeanne Mackenzie said the investigation started Wednesday when she got a tip from one of the massage parlor's customer.

"The tipster stated they had gone in there for a massage and that during their massage, they were offered a sexual act for an additional price," MacKenzie said.

TPD said there is more to the investigation but have not released further details at this time.