SMALLVILLE actress Allison Mack's arrest for alleged "sex trafficking" is said to be imminent after accused Nxivm sex cult leader Keith Rainere was detained this week.

The "brainwashed" 35-year-old was seen in video of the moments after Raniere was arrested, which was leaked to The Sun Online yesterday.

5 This screen grab from a leaked video is believed to show a shocked Allison Mack after Raniere's arrest Credit: Artvoice/ Frank Parlato

She is heard asking "what's going on?" as cops hold Rainere inside a police car.

Other women - believed to be fellow actress Nicki Clyne and high profile followers Lauren Salzman and Loreta Garza - can be heard saying frantically: “We’re going to follow them … let’s go you guys.”

Sources told Art Voice that Mack could now face sex trafficking charges.

Arrest documents state that Raniere was living with “several women” when he was arrested over allegations of sex trafficking at a luxury villa near Puerto Vallarta, Mexico - and that these women “chased” after Raniere in their own car "at high speed" as he was driven away by cops.

5 A leaked photo shows accused cult leader Keith Raniere sat in a police car after his arrest Credit: Artvoice/ Frank Parlato

5 Actresses Allison Mack (right) and Nicki Clyne (left) are believed to have been living with Raniere in Mexico prior to his arrest Credit: Instagram

Raniere, the leader of the so-called self improvement group Nxivm, is accused of using women to recruit sex slaves for him as part of a secret society called “DOS” or “The Vow”, according to the federal complaint against him.

Sun Online last year revealed that Mack had recruited as many as 25 women into the alleged slave cult.

Parlato, who has been working to expose Raniere for several years though his Frank Report and Artvoice websites, confirmed that Emmy-winning Mack was the blonde woman in the video - which was leaked to him by a source - and shared with Sun Online.

“This video shows how brainwashed these women are that they are prepared to put themselves in danger to try and save their ‘leader’," Parlato said. "It’s amazing the level of delusion that these women actually think they would be able to stop armed police officers from arresting Raniere.

5 This is the brand of an escaped DOS member Credit: Frank Report

5 Sun Online revealed that Allison Mack was allegedly a high ranking member of the group last year Credit: Getty Images

“Allison Mack is the blonde woman shown in the video - and Nicki Clyne and other followers can be heard in the background.

“Properties associated with Nxivm and Raniere are also being raided by the FBI.”

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Raniere is currently in federal custody and if convicted faces up to life in prison after being charged with sex trafficking and conspiracy to commit forced labour.

Known as "Vanguard" to followers - Raniere is accused of having a "decades' long history of abusing women and girls" - including "repeated sexual encounters with multiple teenage girls" as young as 12, according to the document.

In a federal complaint against the 57-year-old, the US government accuses Raniere of of running a secret society in which women were recruited as slaves from a so-called self improvement group called Nxivm.