A Montoursville business on Broad Street that promotes itself as a spa where one can get massages was actually “a house of prostitution,” borough police alleged in court documents.

The allegation against the Jia Yuan Spa at 440 Broad St. resulted in the arrest on Sunday of Liuping Li, 49, of Allentown, police said.

Li faces a felony charge of promoting prostitution. It is alleged that she did “own, control, manage, supervise or otherwise keep in association with a prostitution business,” Assistant Chief Clinton Gardner alleged in a criminal complaint.

A second woman, Haihua Shao, was detained by ICE, a police affidavit said, according to PennLive.com.

The investigation began Saturday after police received a tip from an anonymous source “regarding the solicitation of sexual acts” taking place at the spa, Gardner said in an affidavit.

The source stated they paid $140 to the spa on two occasions for sexual favors; once six months ago and again on Saturday, Gardner said.

With this revelation, Gardner alleged “Jia Yuan Spa was operating as a brothel,” the affidavit stated.

Investigators moved quickly and executed a search warrant at the business shortly after receiving the tip.

When they raided the spa, police found two Asian females, one identified as Li, and one nude Asian male, Gardner said.

One of the women had in her possession cash that was “nearly identical to the amount the source reported paying for sexual services,” the affidavit stated.

Police seized over $600 that “was organized into several bundles, with a majority of it concealed inside a Cheerios box,” the affidavit stated.

Next to the cereal box was another box that contained articles that are used in sexual acts, Gardner said.

Police also took possession of “a transaction ledger, as well as documents that reflected consistent bank deposits and numerous credit card receipts,” the officer said.

Following her arraignment before District Judge Christian Frey, Li was committed to the Lycoming County Prison in lieu of $250,000 bail.

A Chinese language interpreter was used at the hearing, where Li claimed she came to the U.S. in 2017 or 2019 and has been living in Allentown with her husband for seven years, according to PennLive.com.