Nathan Chasing Horse trained his wives to use firearms, instructing them to “shoot it out” with police officers if they ever tried to “break their family apart,” according to records obtained by The Associated Press. If that failed, the actor from “Dancing With Wolves” said they should take “suicide pills."

The abuse that authorities said spanned two decades led Tuesday to the arrest of Chasing Horse following a monthslong investigation by Las Vegas police. He was taken into custody as he left the home he shares with his five wives in North Las Vegas. SWAT officers were seen outside the two-story home in the evening as detectives searched the property.

He was booked before midnight

During the raid, police found memory cards with videos of the sexual assaults, firearms, 41 pounds of marijuana and psilocybin mushrooms in the home, according to an arrest report released Wednesday.

Known for his role as the young Sioux tribe member Smiles a Lot in the Oscar-winning Kevin Costner film “Dances with Wolves," Chasing Horse gained a reputation among tribes across the United States and in Canada as a so-called medicine man who performed healing ceremonies. But police said he abused his position, physically and sexually assaulting Indigenous girls and women, taking underage wives and leading a cult.

Chasing Horse, 46, will be charged with at least two counts of sex trafficking and one count each of sexual assault of a child younger than 16, child abuse or neglect and sexual assault, according to court records. Authorities have not said when he will be formally charged.

He was booked before midnight into Clark County’s jail, where he remained held without bail on the sexual assault charges as he awaits his first court appearance, expected Thursday in North Las Vegas. There was no lawyer listed in court records for Chasing Horse who could comment on his behalf, and Las Vegas police said he was “unable” to give a jailhouse interview Wednesday.

According to a 50-page search warrant obtained by the AP, Chasing Horse is believed to be the leader of a cult known as The Circle.

At least two women told police that Chasing Horse had shown his wives a stash of “small white pills” that he called “suicide pills” sometime in 2019 or 2020, years before his arrest.

The women were instructed to “take a pill to kill themselves in the event he dies or law enforcement tries to break their family apart," according to the warrant.

One of Chasing Horse's former wives also told police that she believed his current wives would “carry out the instructions” to take the pills and open fire on law enforcement if officers came to the home to arrest Chasing Horse.

Las Vegas police said in the document they have identified at least six sexual assault victims, some who were as young as 14 when they say they were abused, and traced the sexual allegations against Chasing Horse to the early 2000s in multiple states, including Nevada, where he has lived for about a decade, and South Dakota and Montana.

“Nathan Chasing Horse used spiritual traditions and their belief system as a tool to sexually assault young girls on numerous occasions,” detectives wrote in the warrant, adding that his followers referred to him as “Medicine Man” or “Holy Person” because they believed he could communicate with higher beings.

One of Chasing Horse’s wives was offered to him as a “gift” when she was 15, according to police, while another became a wife after turning 16.

Chasing Horse also is accused of recording sexual assaults and arranging sex with the victims for other men who paid him.

He was arrested nearly a decade after he was banished from the Fort Peck Reservation in Poplar, Montana, amid allegations of human trafficking.

Trafficking allegations

Fort Peck tribal leaders had voted 7-0 to ban Chasing Horse from stepping foot again on the reservation, citing the trafficking allegations in addition to accusations of drug dealing, spiritual abuse and intimidation of tribal members, Indian County Today reported.

State attorneys general and lawmakers around the U.S. are looking into creating specialized units to handle cases involving Native American women.

In South Dakota, where police said Chasing Horse committed some of his crimes, the attorney general’s office has put a new focus on crimes against Native American people, including human trafficking and killings.

Chasing Horse was born on the Rosebud Reservation in South Dakota, which is home to the Sicangu Sioux, one of the seven tribes of the Lakota nation.