Smallville star Allison Mack may be facing arrest for her connection to a so-called sex cult following the apprehension of the cult’s leader earlier this week. That’s according to sources speaking with ARTVOICE, who allege that Mack is the “Co-Conspirator 1” (CC-1) named in a legal complaint filed by the FBI.

Keith Raniere, the leader of the cult known as NXIVM (pronounces “Nexium”) was taken into custody by Mexican federal police on Sunday and extradited to the U.S. to face charges of sex trafficking and conspiracy to commit forced labor. Mack was reportedly on site when Raniere was arrested.

The FBI complaint details the experiences of a number of women recruited to NXIVM’s DOS, a group made entirely of women who operated in a Master/Slave hierarchy with Raniere at the apex of the pyramid. Recruits were forced to turn over collateral—sometimes in the form of damning documents, other times in the form of credit card numbers. From there, they were indoctrinated into the group’s negative beliefs about women, sometimes put on extremely restrictive diets, and were forced to perform “acts of care” for their Masters. These would generally include basic acts common to a personal assistant, like getting coffee, carrying luggage, grocery shopping, etc. Eventually, many of these “Slaves” were required to perform sexual acts with Raniere.

Speaking to the press on Monday, FBI Assistant Director in Charge, William Sweeney called Raniere’s actions “serious crimes against humanity” and said Raniere “displayed a disgusting abuse of power in his efforts to denigrate and manipulate women he considered his sex slaves.”

These new details add to accusations from a New York Times piece last October in which former cult members described their experiences inside the group, including a ceremony that involved branding a symbol which included Raniere’s initials into the skin on their hip.

According to reports from around the time of the NYT article, Mack was a high-level recruiter for the organization, positioned directly below Raniere, and may have been responsible for the creation of DOS in 2015. She joined NXIVM in 2006 along with fellow Smallville star Kristin Kreuk. Kreuk, however, says she left the organization in 2013 and never witnessed any of the group’s more illegal activities. In a statement on Twitter, Kreuk expressed sympathy and support for victims of Raniere.

Raniere reportedly used the moderate celebrity of both actresses as a recruitment tool. According to Mack’s own website, Raniere was a mentor to her for years and the two of them went on to found The Source, a program for actors operating under the NXIVM umbrella.

In 2017, Frank Parlato, a former spokesman for NXIVM, broke with the group and started a website where he has written extensively on NXIVM, DOS, and other organizations associated with Raniere. There he discusses Mack’s involvement as a key player in the ‘secret society’ of women, recruiting additional Slaves for the group and participating in their ongoing activities.

So far, no charges have been filed against Mack or any other women involved in NXIVM or DOS. In a statement on their website, NXIVM maintains Raniere’s innocence.