Therese Ann Cook, the owner of The Arcade Circus, has been charged with 42 counts of physical and sexual abuse.

A group of men and women from an Australian circus training school have been charged with the alleged ongoing sexual and physical torture of three boys over two years.

Four women, two men and a 17-year-old girl have been charged with 127 offences relating to the alleged sustained abuse that occurred between 2014 and 2016.

Police said the seven alleged offenders were involved in a New South Wales circus training school called The Arcade Circus that catered to children with and without disabilities.

The charges include rape, kidnapping and assault occasioning actual bodily harm. It is alleged that members of the group also used the young boys to produce child pornography material.

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Some trainers are accused of performing sadistic "blood rituals" on the young boys, the Daily Telegraph reported.

The circus school owner and carer, Therese Ann Cook, 58, is listed to appear in Penrith Local Court on Tuesday.

Cook has been charged with 43 offences, including aggravated sexual assault of a child under 10, sexual intercourse with a child under 10 and aggravated kidnapping.

On an online profile, Cook said she started The Arcade Circus in 2009 and believed she was "tragically lost from the back of a travelling circus truck shortly after birth".

"After working in health and education Therese followed the striped and feathered path and discovered her circus community in 2005," the profile said.

The profile said she is a carer and teacher who works for the Joan Sutherland Performing Arts Centre and was given a scholarship to train and attend the first National Indigenous and Social Circus Training and Conference.

The Arcade Circus describes itself as an "all abilities community circus" that offers term-long programmes for young people.

"The class sizes are smaller than usual so one on one training can still be provided to every student throughout the lesson. All students are treated as equals and every student will feel welcome from their first day," the group said.

A statement from NSW Police said detectives from the Child Abuse and Sex Crimes Squad established Strike Force Baillieu in July 2017 to investigate reports of historic abuse on three boys, who were under the age of 8.

Seven people were arrested at homes in near Australia's Blue Mountains at 7am on Monday.

The teenage girl has been charged with eight counts of aggravated sexual assault in company, aggravated kidnapping, and producing child abuse material.

An 18-year-old man has been charged with 42 offences, including kidnapping, sexual intercourse with a child under 10, and common assault.

A 20-year-old man has been charged with aggravated sexual assault, aggravated kidnapping and committing a serious indictable offence, two counts of common assault, and assault occasioning actual bodily harm.

All three were refused bail to appear at children's courts on Tuesday.

Three more accused, along with Cook, were all refused bail to appear in various Sydney courts on Tuesday.

Calls to a phone number listed for The Arcade Circus went unanswered on Tuesday morning.