Four people were arrested on suspicion of human trafficking Wednesday when police raided an Upland massage parlor.

Agents from the Department of Homeland Security and Upland Police officers went undercover at several massage therapy businesses in the city.

The operation netted the arrests of Aura A. Renzu-Vasquez, 31, of San Bernardino; Ivette Serrano, 51, of Southgate; Maria Gonzalez, 39, of Montebello and Esmaranda Miranda, 34 of Riverside according to an Upland Police news release.

Police say these people are suspected in a criminal network of human trafficking and prostitution.

The joint task force anticipate additional arrests in the near future.

Anyone with information is asked to call police at 909-946-7624, Ext. 3363.