Two of three suspects in a human-trafficking case involving three central Ohio massage parlors have been released from jail ahead of their April trial dates.

Two of three suspects in a human-trafficking case involving three central Ohio massage parlors have been released from jail ahead of their April trial dates.

Sisters Estella Xu, 54, and Qing Xu, 57, were released from the Delaware County jail Feb. 6 after both posted $500,000 surety bonds, according to Delaware County Sheriff's Office records.

Xiao Shuang Chao, Qing Xu's husband, remained in jail as of Tuesday, Feb. 17.

Chao, 56, and his wife were arrested Jan. 14 after multiple police agencies raided massage parlors in Columbus, Powell and Worthington.

Authorities allege the pair forced seven women to live and work at the businesses, where employees also reportedly engaged in prostitution.

Estella Xu, of Pomona, Calif., turned herself in to Delaware police within a week of her sister's arrest.

All three were indicted in late January by a Delaware County grand jury.

The three face one count each of engaging in a pattern of corrupt activity, a first-degree felony; eight counts of promoting prostitution, a fourth-degree felony; three counts of practice of medicine or surgery without a certificate, a fifth-degree felony; and three counts of money laundering, a third-degree felony.

All three defendants pleaded not guilty to the charges and are scheduled to go to trial April 7 in the Delaware County Court of Common Pleas in front of Judge Everett Krueger.

According to court records, Estella Xu has agreed to live with her brother in northeast Columbus as she awaits trial, while her sister will live in Powell.

The sisters are not allowed to contact each other, Chao or any of the massage parlors' former employees, according to the terms of their bond agreements.

They also must submit to GPS monitoring.

Powell police officials said the investigation into the businesses began in October after the department received a tip that workers were sleeping and performing sex acts at Amsun Massage, 128 E. Olentangy St., in the city.