Several people employed by Backpage.com were charged in a 93-count indictment unsealed on Monday that included among the accusations knowingly facilitating prostitution.
Backpage.com and its affiliated websites were seized on Friday by U.S. federal law enforcement authorities and taken off the internet.
As part of his agreements with the U.S. Department of Justice and with prosecutors from California and Texas, Ferrer has agreed to cooperate in the criminal case against Backpage co-founders Michael Lacey and James Larkin.
Prosecutors have accused the website of generating $500 million in prostitution-related revenue since its 2004 start, and of money laundering by routing funds through seemingly unrelated entities, using foreign accounts and converting it into and out of cryptocurrencies.
Lawmakers and law enforcement officials have long been working to crack down on the website, which was used primarily to sell sex and was the second largest classified ad service in the United States after Craigslist.
Also charged in the indictment were Backpage.com's executive vice president Scott Spear, chief financial officer John “Jed” Brunst, sales and marketing director Dan Hyer, operations manager Andrew Padilla and assistant operations manager Joye Vaught.