DALLAS — Dallas police said the owners of some seedy massage parlors made them rich, and they spent some of the money on luxury cars, homes and trips, which were paid for in cash.

On Wednesday, officers rescued 16 women they say were living in deplorable conditions in the massage parlors as part of a sex trafficking ring. The massage parlors are located at 11309 Emerald Street in northwest Dallas.

Police arrested four people, including Josip Maric, an assistant basketball coach at Texas A&M University-Commerce.

Officers raided his home Wednesday as shocked neighbors looked on.

"When you find it's someone you see across the street and works on your own campus and that something like that is going on,” neighbor Kathryn Jacobs said. "Just the things they are talking about are morally revolting."

RELATED: DPD busts alleged sex-trafficking operation at NW Dallas massage parlor; 4 arrested

According to court documents obtained by WFAA, Maric owned one of the massage parlors called Jasmine.

Texas A&M-Commerce issued a statement saying, "We have terminated his employment. The allegations against this person are very serious and do not represent our campus or our athletic program."

Also arrested were Pornthipa Khan and Steven Eix who lived together in a home in Lewisville.

Police believe the couple may have tried to hide millions of dollars they earned from illegal prostitution by exchanging the money at two casinos in Oklahoma.

Court documents show that "Between January 2015 and January 2019 the couple deposited more than 5 million dollars in cash into Winstar and Choctaw casinos, and nearly a million and a half dollars into various banks for a total nearly 6 and a half million dollars."

Police believe the sex ring was in operation for years and some of the women may have been given drugs.

During a raid, police found methamphetamines. The women were being interviewed to see if they were held against their will.

Meanwhile, the city is suing to shut the businesses down for good.