The investigation into the involvement of sex buyers is active and ongoing," the U.S. Attorney's office said.
"I believe there are potentially hundreds of yet to be identified customers," a Department of Homeland Security special agent wrote in that affidavit.
The agent did not name the customers known to have used the brothels' services, but noted, "I do not do this for purposes of maintaining their anonymity, but instead do so because our investigation into their involvement in prostitution is active and ongoing."
They have the electronic devices with all this information now.
Each website allegedly described a verification process that interested sex buyers undertook to be eligible for appointment bookings — including requiring clients complete a form providing their full names, email address, phone number, employer and reference if they had one," the U.S. Attorney's office said.