One man was in custody Wednesday after McLennan County deputies raided two Waco area massage parlors Tuesday in a crackdown on human trafficking in Central Texas.

Jacob Guang Yang, who turned 44 on Tuesday, was held in lieu of $50,000 bond charged with trafficking of persons, according to online jail records.

He operated both of the parlors raided Tuesday, McLennan County Sheriff Parnell McNamara said Wednesday.

Yang was arrested Tuesday night in northern McLennan County near the Hill County line after deputies say they witnessed him returning to one of the raided parlors to collect some items.

Authorities say he drove down from the Dallas area.

Yang is the only person arrested so far in the crackdown.

"We were rather shocked when we got into this,” he said.

“When we started looking into it we saw that some really bad things that were happening and we just addressed it and were going to address some more," he said.

Deputies and Department of Homeland Security officers raided a massage business Tuesday morning in the Bosque Shopping Center at State Highway 6 and Bosque Boulevard, McNamara said.

They later served warrants at a second parlor at 7034 Sanger Ave., he said

More than $11,700 in cash was seized during the raids Tuesday, McNamara said Wednesday.

Authorities found two women at each of the parlors who were engaging in prostitution, he said.

The women, all of whom are 18 or older, were all living in the parlors, are all from China and are all in the country legally, he said.

None of them speaks English, he said.

The founder of the anti-human-trafficking group Unbound Waco was at the scene of the raid Tuesday at the shopping center, along with a translator, working with the women involved.

"We're just here to be a comfort to the ladies that are here,” Susan Peters said.

"We have a translator help comfort them, explain things to them, explain the process and things like that"