The "Fantastic Adventures" channel had more than 700,000 followers and 240 million views.
In the videos, the kids discuss silly topics and perform what's described as low-fi visual effects and tricks. She was booked on two counts of child molestation, seven counts of child abuse, five counts of unlawful imprisonment and five counts of child neglect.
A YouTube star is accused of physically abusing her seven adoptive children, who told authorities they were pepper-sprayed, beaten and deprived of food and water if they didn't participate in her videos.
CNN obtained a copy of a statement of probable cause, which stated that the children claimed they were disciplined if they could not recall their lines or didn't want to participate in the videos as they were directed to.
The statement of probable cause details a visit that welfare officers made to the home on March 13 after getting a tip from an adult daughter, who said one of the children said they were being abused. The children reportedly stated they were hungry and thirsty.
One of the children alleged that "her mother would spray her and her siblings with pepper spray all over their face and body", while another "stated they would go days without food, water", the statement said.
A police report says Machelle Hobson's adopted children had no food, water or access to a bathroom for days while inside the closet at her home in the small city of Maricopa south of Phoenix. "When we're made aware of serious allegations of this nature we take action, which may include suspending monetisation, or, upon conclusion of an investigation, terminating channels".
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The trio is now being held without bond.
"I either get beat with a hanger or belt" "or a brush", one child said, "or get pepper sprayed from head to toe", according to the statement.
YouTube confirmed the "Fantastic Adventures" channel was demonetised as soon as it found out about the arrests.
The channel was taken down by mid-afternoon Wednesday leaving a message that said it had violated YouTube's community guidelines. Her elder sons, Logan and Ryan Hackney, also got arrested for not reporting the abuse of the minors.
"We take safety on YouTube very seriously", a YouTube spokesperson said in a statement shared with Gizmodo.
Machelle denied to police that she used pepper spray on the children or forced them to take ice baths.
Logan and Ryan were arrested along with Machelle. "We immediately suspended monetization when notified of the arrest". And just a few weeks ago, Logan and Ryan Hackney brought over Hobson's seven adoptive children to the couple's house to film a collaboration. Officers noticed the children looked pale and malnourished. The parents said they were shocked to learn of the allegations. "The things those kids had gone through and were going through, my heart breaks for them because nobody deserves that".More news: Biogen stock price: Biogen shares tumble as Alzheimer's drug trial disappoints
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