SEATTLE -- Four people were arrested Thursday after King County sheriff's detectives and officers served search warrants in SeaTac, Kirkland, and at two locations in Bellevue, the sheriff's department said.

The four businesses searched were massage parlors that detectives said were fronts for prostitution. Detectives said the four locations have common owners, managers and workers.

The SeaTac business was called Miracle Spa at 312 South 192nd Street. A 51-year-old woman was arrested at that location.

The Royal Spa was raided in Bellevue at 16407 Lake Hills Boulevard where a 33 year-old woman was arrested.

The second Bellevue location was the Chada Thai Bodywork at 10448 Northeast 29th Street. Two women, ages 28 and 36 years old, were arrested.

Detectives also raided the Lisa Thai Massage in Kirkland at 1942 Market Street. No arrests were made at that location.

King County Sheriff's Department Sgt. John Urquhart said all of the women were booked into the King County Jail on suspicion various charges, including promoting prostitution and money laundering, which are both felonies. Additional arrests are likely, he said.

Detectives said business records were seized from each location and that customers who can be identified from the records or credit card receipts will be contacted by investigating detectives.